How are batteries cheaper then... no batteries at all? Since the routes are fixed anyway you can attach a cable to the sealing of the tunnel and connect it to the Teslas. You can then drive the Teslas around like slot cars. Requires no charging, weight reduction, no battery degradation and no energy conversion loss.
Why are you so anti-innovation? So anti-progress? There is no reason why the slot car concept cant work. Just plug the car to a long cable. I call it the hyperslot.
