MarkHaversham wrote:symphonicpoet wrote:California just passed a law banning new internal combustion cars by 2035. It's not a big leap from there to banning new cars altogether.
What, that's a huge leap! One just requires changing the mix of cars sold, the other involves redesigning 99% of our (currently auto-centric) infrastructure.
Exactly.
Respectfully, high-speed rail does not make sense for most peoples daily commute let alone your average trip to grocery store, take kids to soccer practice, goat yoga class etc. Buses could but that would be a true paradigm shift in behavior and not really what we have been talking about. Ride share is another potential threat but Musk has leaned into that in the past so he isn't inherently against things that are potential threats to the base of his wealth.
symphonicpoet wrote:. . . Also, there's a big big big difference between a train in a tunnel, even a maglev train, and "Hyperloop." The thing was originally proposed to be a vacuum tunnel. Which is why it was ridiculous. And it was touted as sexy new tech, even though vacuum transit was first tested in about 1890 or so. And if it's the same, why not just propose an ordinary sized maglev with ordinary (or larger) cars and be done with it? This god-awful Hyperloop crap has always been undersized cars with limited capacities.
Hyperloop has a number of concepts. Some uses evacuated tubes. Others simply use an airstream moving at equivalent speeds so you don't have to move it out of the way. The evacuated tubes is functionally better but harder technologically. Not for the pod, aircraft fly at 30,000 feet in pressurized cabins, but for the tube and maintaining an evacuated state over the necessary distance, and introducing the pod to the tube without breaking vacuum. Of course this is done regularly at the international space station so that's not inherently unsolvable but its challenging.
I assume the reason why most proposal use pods versus trains is multi faceted but here are some reasons.
-throughput, as people arrive they leave rather than waiting for enough people to arrive to fill the train
-flexibility, the biggest time delay for such a system would likely be loading and unloading, multiple stops would be a big time waster, so direct point to point service along the line has a lot of appeal, the challenge then becomes the ability to receive the incoming pods and process them at peak times.
-ability, since its being pushed along with magnets propulsion comes from the tube, not the pod so there is no reason an engine need be built which means no need for a bunch of cars strung together
-power, pushing 100 pods in one local area would drive up power requirements at that locality for that instance, distributing the pods would balance the power requirements
-preference, people like to have their own pod and why not you aren't constrained by past paradigms its a blank canvas, so whatever works best, i'm not sure why you prefer a conglomeration of people all with individual destinations to be drug around together, stopping at intervals for a small subset of them to be exchanged with another subset. Point to point is the most convenient for most people.
-capacity, this requires an extremely advanced management system but consider a case where hyperloop cars can be within 10 pod lengths of each other. the capacity is only limited by how many pods you have until the tub is saturated and how many you can process on each end. That's a huge capacity upgrade from a few trains a day on hi-speed rail. Now you could run equivalent capacity on the hi-speed rail system so its not necessarily a fair comparison but individual pods with no massive propulsion unit should be easier to scale according to demand than a quarter mile long train. This gets into the interest from cargo perspective.
You could theoretically run pods on a maglev without the tube but you add airressistance and either need to propel from the track or develop a small engine for each pod capable of acheiving the speeds. Hi-speed maglevs have another disadvantage that are also mitigated by the hyperloop concept They are vulnerable to adverse weather conditions and track obstructions. Hyperloop is not vulnerable to those issues.
symphonicpoet wrote:Oh, there's another form of transportation that could actually compete with the one you sell? Seriously? Not a schoolboy fantasy, but one that's there and works? Tell me more
Anyone who claims one could be implemented without many years and massive nonrecurring development costs is ignorant, or lying. Not to invent new technology but to figure out how to implement it economically at scale. It won't come from a private entity any more than Musk built his rockets on his own. He didn't, he got essential federal funding at a critical time and it saved SpaceX. A government will have to decide its a priority for it to happen. No person is rich enough to build it on their own. After the first hyperloop is built the development cost is largely sunk you can compare per mile cost, travel and capacity to that of hi speed rail. Is it worth it. I dunno, almost certainly not at first, maybe eventually. I'm not even sure the speed advantage of high speed rail is economically justifiable. Grade separation, and dedicated dual track would do a lot for me. Speed increases are just gravy.
Being technologically feasible is no guarantee of success. Monorails aren't ubiquitous across the country. The Concord went the way of the dodo. So maybe hyperloop was an idea that's ahead of it time, and maybe there is no time for it at all.
I just don't see it as a grift because there is no ulterior motive for him. It is completely unconnected with either of his core businesses. High-speed rail or no high-speed rail = zero impact to his fortune.