3 Questions After Musk Shows Model S in Tesla's Tunnel

I don't know what the Tesla Company Tunnel is, but assume it's Tesla's testing tool for the hyperloop tunnel. Since Musk said in his Instagram message that the tunnel starts at Hawthorne, which is near Los Angeles, I wondered how far is Fremont from Hawthorne. Fremont, CA, is of course Tesla's headquarters.

Google shows that Fremont is 371 miles away from Hawthorne and on average it takes 5 hours 23 minutes to get to Fremont from Hawthorne. Is it fair to assume that soon there will be another hyperloop between Los Angeles and San Franciso, starting in Hawthorne? I say another, because in July Elon Musk tweeted that he has a green light to build a hyperloop between New York and Washington D.C.

3 Questions About Los Angeles Tesla Tunnel

• First, can the same tunnels be used for building hyperloop?
• Second, won't there be huge delays and lines to just get into the tunnel?
• Third, how much will it cost to get your car in there?

Seeing a Tesla Model S already in the tunnel, is so amazing. It's like it was yesterday when Tesla announced the idea. Tesla shows that they announce about doing a thing and then proceed to do it. But doesn't it take civil engineering firms a massive amount of time and resources to plan and then dig a tunnel like this? How could Tesla achieve it in such a short period of time?

Judging from the picture, it looks like cars go on top of a sled that is at least the middle of the height of the Model S. Some people say it should only be big enough to barely fit the largest "normal" van/suv/pickup. Any bigger is a huge waste of money. What do you think?

Here is what the hyperloop looks like in action.

Hyperloop pod run by team WARR pic.twitter.com/ntaMsoxkZE— Elon Musk (@elonmusk) August 28, 2017

Update
Elon just tweeted an update saying "To be clear, a Hyperloop passenger version wouldn't have intense light strobe effect (just for testing), nor uncomfortable acceleration."