Certainly, moving the emissions from the vehicle’s exhaust pipe to the power station makes it easier to control the pollution. So, the question becomes whether there is a more efficient way of packaging electricity for use in vehicles, other than charging batteries or making hydrogen by electrolysis of water?

A growing body of opinion seems to think liquid air is the answer (or, more specifically, the nitrogen component that makes up 78% of air).

Overview of a potentially viable alternative to batteries or hydrogen to power emission-free vehicles. As a bonus, liquid nitrogen can be used to make some crazy modern dishes in the kitchen.