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Tesla Intrigue Deepens with Musk's Twitter Barrage

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Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#171

Tesla could have done a better job communicating that the internal look or feel wasn't finalised. Clearly that didn't impact pre-orders but I think a lot of people didn't love the internal look even if they thought it was nice looking externally (disclaimer: I was one of these people). In my OPINION the 3 won't be fully self driving (for certification/legal reasons). But we can reasonably speculate that it will have…

>auto-braking, lane keep assist, automatic cruise control, and similar I bought a mazda cx recently with all of these feature. I must say I don't find any of these really useful, but again I don't text while driving. I think these features breed a false sense of security and encourage users to text while driving. Features like these should be introduced only when they can protect users from all cases of distracted dr…

> I must say I don't find any of these really useful, but again I don't text while driving.

Lane keep assist is just a quality of life thing. You get on the highway/motorway, get in your lane, and it makes subtle movements to keep you centered in the lane. It doesn't drive for you.

So for example on windy days when the wind is pushing you constantly one way, Lane Keep Assist counteracts that lateral movement. On a straight piece of highway/motorway with no wind it does nothing at all.

Automatic cruise control is the same as regular cruise control but requires less driver input. Instead of picking an exact speed you set a goal speed, and the vehicle will either go that speed or the speed of vehicles in front of you.

The nice thing about automatic cruise control is that traffic doesn't often go at one set speed for a long period. Things like exits, construction, traffic composition, earlier accidents, etc can all cause traffic to slow for periods of time before speeding back up. Automatic cruise control means you don't have to manually adjust to these variances. It also keeps you a safe travel distance from the vehicle in front.

Automatic forward braking helps make automatic cruise control safer by allowing the vehicle to slow extremely rapidly if needed (e.g. an accident happens in front of you). Faster in fact that most humans.

But automatic forward braking isn't just useful when combined with automatic cruise control, it can brake you when a "foreign object" is in the road (e.g. animal, pedestrian, etc) which can either stop accidents entirely or reduce the damage done. It also helps with common rear-end accidents or rarely more serious accidents.

Day to day you shouldn't be using automatic forward braking.

They've already been looking at if automatic forward braking works and, yes, it does. It reduces accidents and when accidents still occur it reduces how bad they are.[0]

None of this has anything to do with texting and driving. In fact if I take my hands out of the wheel the automatic cruise control will bleep at me and eventually disengage.

[0] http://www.autonews.com/article/20160128/OEM06/160129871/aut...

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#172

Earlier quoted context omitted.

A grill on an electric car doesn't serve a purpose. The lack of a grill does serve a purpose: don't cut holes in body panels if you don't need to.

The drive motors must need some sort of air cooling.

Yeah, could be. Doesn't mean the car has to have a grill. Note that VW Beetles get along fine without a front grill, and the engines on those need lots of air cooling.

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#173
post #85

Earlier quoted context omitted.

Don't forget computers have vastly faster response times than people. A car going 5mph with 10ms reaction times can stop in ~1 foot. http://www.random-science-tools.com/physics/stopping-distanc...

Do you want to be inside the car when it does that? It is not going to be much fun unless you are paying attention and bracing yourself, in which case I'm not sure I see the advantage of letting the computer do it for you.

You are probably overestimating the jerk from that. 5mph has (1/12)^2 = 1/144th the energy of 60mph. Passengers often don't pay attention to what's going on and breaking force is generally not enough to really mess with people.

That said, the default is not going to be stopping within 1-2 inches of pedestrians, rather it's going to gradually slow down to deal with pedestrians while trying to maintain forward progress. The point is a self driving car could be more aggressive than most people while staying safe instead of freaking out and just stopping because people are jaywalking.

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#174
post #31
post #21

Earlier quoted context omitted.

At all? How would it drive to the mall on the other side of town without GPS?

A map, plus the assumption that it never moves without being powered on. (I'm sure it does use GPS for navigation. But it's hypothetically possible to do without.)

Using just dead reckoning you would pretty quickly have issues with accumulated error.

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#175

Earlier quoted context omitted.

They barely communicated anything at the reveal. It was like a few minutes of leadup, five bullet points about the 3, and then they showed the cars and ended it. Given the audience they had, a bit of a wasted opportunity.

I wouldn't exactly call ~300,000 one thousand dollar deposits in less than 4 days a wasted opportunity.

[deleted]

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#176
my only head scratch on the design is the giant tablet attached to a thin pole on the dash

i live in sf, where a book on your passenger seat will get you a broken window and lose you a book

the tablet looks like it is going to inadvertantly encourage broken windows and is inevitably going to be ripped out of the dash

here's to hoping it retracts to under the dash when off

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#178

Earlier quoted context omitted.

Assuming its 'his' to begin with. Not hers already?

I'm quite sure that Musk is the one responsible for the increase in value of his companies, not someone who's been uninvolved in running them.

I am able to concentrate on growing my career because of my spouse, not in spite of them.

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#179

Earlier quoted context omitted.

A grill on an electric car doesn't serve a purpose. The lack of a grill does serve a purpose: don't cut holes in body panels if you don't need to.

The drive motors must need some sort of air cooling.

Also the batteries need cooling

Re: Tesla Intrigue Deepens with Musk's Twitter Barrage

#180
post #106

Earlier quoted context omitted.

One scenario that I keep thinking about all the time: traffic in most south-east asian countries like Vietnam (Hanoi for example). The streets are occupied by a mix of cars, pedestrians (+ animals) and motorcycles. Everything moves ultra close. Must be a nightmare for every car proximity-sensor.

Actually, no. Speeds are low enough that almost-zero reaction time is a huge advantage, and the rules are basic swarm-like behavior (plus bigger cars have priority).

I'm not sure. In my experience, you have traffic situations where everyone around you is trying to weave in and out through the smallest gaps. The car will need to get really good at predicting behavior or drive so conservatively that all other vehicles end up passing you by.
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