> Public transit has failed to solve the problem despite a 100-year head start. So the question here really is "which would improve LA more: tunnels that carry

> Public transit has failed to solve the problem despite a 100-year head start. So the question here really is "which would improve LA more: tunnels that carry trains, or tunnels that carry carts that hold single cars?" There is plenty of strong evidence that shows adding additional road capacity increases overall traffic. I'm not sure that adding ways to move cars around faster wouldn't have the same impact, versus a train.