What I would really like to see are electrical powered vehicles that rely on capacitors and fossil fuel powered generators.
A discharged capacitor poses no risk, and an engine attached to a generator can be tuned for absolute maximum efficiency since it only needs to run at one RPM.
This is the way.
What you've proposed is basically a hybrid arrangment.
The way you know this isn't about the environment is because Hybrids have been completely excluded from the conversation in favor of EV's with no explanation of where the electricity will come from, the supply limitations of the rare earth metals needed to produce them, or the environmental wastelands created by mining them.
Not picking on 930cabman in my comment above. Everyone talks about limited supply of fossil fuel but not a peep about supply limitations on the raw materials for EVs?