The ICE has been almost the same for over 100 years. There have been two attempts to change it as far as I know. One was the rotary Wankel (however you spell it) with the round and round thing instead of the up and down piston. The other was the turbine. Neither of those made it.
The battery and chargiing will be the hold up on the electric cars.
I was saying that right now people do not have to pay a special tax on the electricity used in the electric cars. To pay for the roads there will be some kind of tax on the cars that most likely will be by the miles driven. What I ment was that right now the electric car owners will some how be charged a special tax to make up the difference over the ICE cars and trucks. I know a fellow in the trucking business. He says he has to keep up with what state the fuel is bought and then used in. Real pain in the neck to do.