Kisan Patel

I really love Elon Musk! but this idea to me seems a little more far fetched? 1. Cost of creating tunnels, where to put the routes, what cities will have it, what about the subway? 2. Compatibility of the cars, just 1 at a time? 124mph.. in on direction with how many stops? probably a lot of other stuff to consider, regardless I am no Billionaire and Musk has proven to us countless times before...