211–220 of 490 posts
Folks, Hyperloop One is a company unrelated to Elon Musk. Elon Musk is still working on a Hyperloop, via the Boring Company. https://www.boringcompany.com/hyperloop
Observe the phrase “still working on” doing an extraordinary amount of heavy lifting, certainly more than any Hyperloop ever did.
Robert Goddard designed a vacuum train in the 1910s, why did Elon think it was going to work a century later?
If you don't have an atmosphere, the near vacuum conditions are free
You need robots to dig tunnels if you want sizeable bases. Figuring that out on earth just gives you a headstart.
What should transit look like on the moon? On Mars? Can you use those tunnels? What will be different with lower gravity?
This is the most charitable interpretation I can make, fwiw
I think we should accept that, at least in the case of the US, most future transit infrastructure will be built on existing roads. Every other options is an order of magnitude more expensive. Plus, we have so many roads! If we didn't use them it the most inefficient way possible - cramming them full of giants cars for single people who also happen to be terrible pilots - we could get a ton of bandwidth out of them. A…
I’ve slowly lost my innocence when it comes to public transportation in the US. At this point I can see that 95% of the country is absolutely locked into low-density single occupancy transportation at least till we invent sky cars. We have trillions in sunk cost that covers nearly every road, every home and every business in America. We will never, ever be Europe.
But it still might be worthwhile to find policies that at least help to steer things in the right direction without being failures themselves. Easier said than done, obviously.
Earlier quoted context omitted.
There's not. Tunnels probably only make sense in cities, not wide open rural spaces.
Right of way acquisition is still one of the most expensive and time consuming parts of constructing new railways though.
It served its purpose of diverting attention (and so funding) from high speed rail, which is a threat to his business of selling cars. https://twitter.com/parismarx/status/1571628269555826688?lan...
I'm from Europe originally, and visit often. And now in California. You could make Highspeed rail FREE and I'm not sure I would take it. I might. Maybe. As soon as it costs what gas costs to get to LA from SF ($100 round trip max, so usually $50-33 a person), there is NOOOO way I am ever taking it. Heck, I still need a way to get around once I get there.. so how would the train ever really work for anyone? Now I'm re…
Heck, I saw a post last night about getting dropped off at LAX. It was taking hours to get close to the airport so they got out of their car and walked the last mile or two to the airport with their luggage. I just can't imagine the scale of what would need to change to accommodate cars.
If out of pocket cost and having your car are the two things you value, do you never plan on flying? The out of pocket cost is often comparable and even with security, it's faster. It's also nice to be able to not have to focus on the road for hours.
If I recall it’s a composite (stack) of nearly 100 photos.
my goal was to show an industrial startup in one image.
BTW, I signed a 10-year NDA and I’m guessing their employees probably did too. I got to see a lot of stuff behind the curtain.
Such a shame…
[0] https://www.instagram.com/p/BMiyAIdhCJn/?igsh=MzRlODBiNWFlZA...
It served its purpose of diverting attention (and so funding) from high speed rail, which is a threat to his business of selling cars. https://twitter.com/parismarx/status/1571628269555826688?lan...
I'm from Europe originally, and visit often. And now in California. You could make Highspeed rail FREE and I'm not sure I would take it. I might. Maybe. As soon as it costs what gas costs to get to LA from SF ($100 round trip max, so usually $50-33 a person), there is NOOOO way I am ever taking it. Heck, I still need a way to get around once I get there.. so how would the train ever really work for anyone? Now I'm re…
I think we should accept that, at least in the case of the US, most future transit infrastructure will be built on existing roads. Every other options is an order of magnitude more expensive. Plus, we have so many roads! If we didn't use them it the most inefficient way possible - cramming them full of giants cars for single people who also happen to be terrible pilots - we could get a ton of bandwidth out of them. A…
It served its purpose of diverting attention (and so funding) from high speed rail, which is a threat to his business of selling cars. https://twitter.com/parismarx/status/1571628269555826688?lan...
Earlier quoted context omitted.
I’m not arguing with you here but it would be interesting to know what about tunnelling is fundamentally expensive. Things I can think of: it is slow, so you burn through a lot of wages. To compare with road building the only major road I can think of, built in my lifetime, was the M40. It is 90 miles long and took 4 years to build but I don’t know what the cost was. The channel tunnel is much smaller than a freeway…
You could calculate the cost to tunnel under one linear mile at 40 ft diameter and then realize that whatever number you got, it is the cheap part because you haven’t reinforced, drained, ventilated, or surfaced the tunnel. This doesn’t require a discussion to figure out. You just have to mentally walk through the process and do some back of the envelope math.