The Boring company will massively bring down the cost of tunnels and they could even be paid with the bricks that are generated from dirt.

Elon Musk wants to become his moleman company to make many layers of tunnels. Traffic will be relieved with dozens or hundreds of layers of tunnels. Traffic would become fully three dimensional.

They are only using guidewheels on autonomous electric vehicles. They will have a vehicle once a second.

The system is backwards compatible with the existing roads.