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Test drive: DC to Boston in a Tesla Model S

money.cnn.com

51–60 of 98 posts

Re: Test drive: DC to Boston in a Tesla Model S

#51

"a route 30 miles longer that avoided New York City, and it's battery draining traffic congestion, altogether." I would have thought that slow, stop-start traffic is the ideal conditions for an electric car, both in terms of driving pleasure and energy use compared with traditional cars.

Sitting in traffic with your A/C and onboard computer on drains the battery more.

Re: Test drive: DC to Boston in a Tesla Model S

#52
post #41

Not really a surprise - I don't think there was really any doubt about the performance of the Tesla in normal weather. The NYC area right now is well above freezing, approaching +10C in the daytime, nowhere near the deep freeze that occurred during the NYT drive. This still doesn't put to rest the expected (but somehow controversial) concerns about lithium battery performance in cold weather. This concern IMO needs t…

Diesel also needs special considerations in colder weather (the fuel becomes too viscous at lower temperatures). Just a different set of problems to petrol, not a dealbreaker imo.

As someone who had an 80's diesel car as his first, I can verify that even leaving them in a high school parking lot during a cold winter school day in Maine is a bad idea.

I had to wait about a week for the weather to warm up before the glow-plugs were enough to start it.

However, I believe a Tesla is a different case. I always keep my car's fuel tank above half-filled to preserve the fuel filter (and you should too). While the Tesla might lose some charge during the day in a parking lot or overnight, I can't imagine it would be a seriously substantial amount.

Re: Test drive: DC to Boston in a Tesla Model S

#53
post #41

Not really a surprise - I don't think there was really any doubt about the performance of the Tesla in normal weather. The NYC area right now is well above freezing, approaching +10C in the daytime, nowhere near the deep freeze that occurred during the NYT drive. This still doesn't put to rest the expected (but somehow controversial) concerns about lithium battery performance in cold weather. This concern IMO needs t…

Diesel also needs special considerations in colder weather (the fuel becomes too viscous at lower temperatures). Just a different set of problems to petrol, not a dealbreaker imo.

Not really, any more. The fuel is winterized at point of purchase, so fuel geling is rather unlikely these days (and if it does, there are additives that will un-gel it.

Modern glow plugs are also much better. In my VW TDI, at 10F the glow plug cycle is only about 3 seconds, and then it fires right up. No glow plugs need at all above 35F.

Re: Test drive: DC to Boston in a Tesla Model S

#54

"a route 30 miles longer that avoided New York City, and it's battery draining traffic congestion, altogether." I would have thought that slow, stop-start traffic is the ideal conditions for an electric car, both in terms of driving pleasure and energy use compared with traditional cars.

He's talking about taking the Tappen Zee Bridge vs the George Washington Bridge. I actually used to live in Groton CT (the terminus of both trips) after graduating from the University of Delaware (the origin of both trips). I would never ever use the GWB. The extra 30 miles is always worth it. You can sit on the GWB and associated roads for 3-4 hours on a Friday night to go 10 miles. Not a good situation no matter what kind of car you have (and ironically, there aren't a lot of gas stations in that area, definitely not well marked).

Re: Test drive: DC to Boston in a Tesla Model S

#55

Earlier quoted context omitted.

> Are we forgetting the data from the NYT review clearly showed Broder driving around in circles in a car park? It didn't. It showed him driving .6mi after exiting the highway but there is no proof that he was driving around in circles in a parking lot.

It might not prove he drove in circles in a parking lot, but you have to admit there are discrepancies in the data that have not been explained fully by the NYT editor that don't prove he didn't deliberately try and drain the battery all for having the scoop review that tries and dispels Tesla's claims of efficiency.

There are a lot of claims that were not proven by Musk, like driving through the downtown Manhattan.. When Lincoln Tunnel is nowhere close to Downtown.. (or properly Lower Manhattan)

Let's not start nitpicking, that stop was new for the reporter. He stopped once on the different side of the highway (North bound) and on this side of highway (South bound) the tesla station was in a completely different place.

So yea, it's very plausible that he was looking for it.

Re: Test drive: DC to Boston in a Tesla Model S

#56

Regardless of how much warmer the weather is than when Broder drove the car. If Broder had charged the car completely instead of partially regardless of the obvious drop in capacity in colder weather he still would have made it. CNN have just proven the car is capable, cold weather aside nothing would be much different here. Are we forgetting the data from the NYT review clearly showed Broder driving around in circle…

Who are these drivers? My car gets 180 miles range on a full tank (less than the Tesla) and I fill it every week, maybe.

Yeah, if you need long range, don't play with electricity.

Re: Test drive: DC to Boston in a Tesla Model S

#57
post #42

Earlier quoted context omitted.

The experience with Top Gear has probably influenced the reaction here. I don't find it childish to strongly defend your product if you believe a journalist has written a hack job on it.

>I don't find it childish to strongly defend your product if you believe a journalist Childish really is the best word for it. It wasn't a measured, intelligent response. It came across as a "beat the journalist up" because they posted a bad review. Reminds me of the sort of thing you see bad restaurant owners do when they respond to diner's complaints.

It came across as a "beat the journalist up" because they posted a bad review. Reminds me of the sort of thing you see bad restaurant owners do when they respond to diner's complaints.

I disagree completely -- a better analogy would be that a restaurant owner gets pissed off because the reviewer complains of a fly in his soup when circuit cameras reveal this was never the case.

Re: Test drive: DC to Boston in a Tesla Model S

#58

Regardless of how much warmer the weather is than when Broder drove the car. If Broder had charged the car completely instead of partially regardless of the obvious drop in capacity in colder weather he still would have made it. CNN have just proven the car is capable, cold weather aside nothing would be much different here. Are we forgetting the data from the NYT review clearly showed Broder driving around in circle…

> Are we forgetting the data from the NYT review clearly showed Broder driving around in circles in a car park? It didn't. It showed him driving .6mi after exiting the highway but there is no proof that he was driving around in circles in a parking lot.

In fact, the author has explicitly confirmed that he had to do 1-2 laps of the parking lot to find the unilluminated charging station in the dark.

While that might qualify as "driving in circles", it did not appear to be intentional, and is a valid issue that one might have.

Re: Test drive: DC to Boston in a Tesla Model S

#59

Not really a surprise - I don't think there was really any doubt about the performance of the Tesla in normal weather. The NYC area right now is well above freezing, approaching +10C in the daytime, nowhere near the deep freeze that occurred during the NYT drive. This still doesn't put to rest the expected (but somehow controversial) concerns about lithium battery performance in cold weather. This concern IMO needs t…

I thought one of the benefits of electric cars was that since you had them plugged in overnight you could program them to automatically heat the car to a pleasant temperature for when you went outside to drive, taking energy for this directly from the charger, rather than the battery. And that if your schedule was a bit more unpredictable you could activate this via a smartphone app as well. Does the Tesla not do tha…

This probably works well when you're at home and have your own charging point in the garage. It doesn't work so well when you're in a hotel somewhere and the nearest charging point is a public one in the next town over. (Attempting 110V charging may actually make matters worse in cold weather, based on the experiences of other Tesla owners.)

Re: Test drive: DC to Boston in a Tesla Model S

#60
post #9

Earlier quoted context omitted.

I believe it presently does. In fact, I believe that's the reason why the battery charge level dropped overnight in Musk's presentation of data and why, according to some folk, plugging it in to a normal power socket isn't enough to actually charge it as the battery pack draws more power than the socket can supply simply keeping the thing warm. Such a process will of course drain the battery which still achieves the…

Would better thermal insulation help? Or it is already best economically viable?

I've no idea, I'm no expert in the tech. I'm sure 'better' would always help (though not necessarily overnight when it's a case of just slowing equalisation since you're talking long timeframes) but I don't know if there is a both better and economically viable process?
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