As a retired Intel EE I love Si. Go amprius , cool that it comes from Si vallley.

Recently I saw an RV with motor and battery. The RV power is engaged when force is detected on the hitch. Ok trains haul lots of railroad cars, why not add one that supplies energy for say 10 other cars. Battery recharge? Nope every 500 miles swap out the battery assist. Seems like this would slip into current systems with very little infrastructure. Maybe proof of concept soon?