that’s not practical for cross-country travel, but it’s imminently possible in cities. think how much greener and human scale cities would be if all cars were underground, including parking.
The US has a construction cost problem. The Big Dig cost $24B. East Side Access cost $12B. Gateway Program will cost $30B, and every time you blink the cost goes up. It’s a miracle we actually build anything.
yes, and it's dismaying to say the least. we also do high-speed rail to nowhere for political not civic aims. ~85% of californians live near the coast, and/or wants to visit the coast, and we put rail through the central valley. even worse, the service is not going to be cost/time competitive with flying, not only because of the route but also inflated real estate and construction costs lining the pockets of all the favored rentiers with hats in hand.
Don't need to imagine. Just go to Oslo.
i was actually reading a bit about oslo the other day. i'd wanted to see maps and pictures of the underground roads/parking but the article i was reading didn't have any.