Need to rethink transport from base up
First one has to question whether there is a need to travel so much. E.g. I could do my work from village just as easy as from a town office,
Second, Have dedicated tracks, then high speed, congestion free, accident free automated driving for the majority of the journey
Third put a power rail on the track so you only need small batteries for the last few miles, have high speeds and unlimited range
Fourth, make the thing VERY SMALL, Almost the old Sinclair C5, but better!
Should be able to turn them out for less than £1,000 each! in volume
Being light the track can be very cheap, and it segregates the light cat away from heavy old stuff.
My calculation indicate efficiencies equivalent to 500miles to the gallon.
It solve congestion too as they take a fraction of the road space.
One or two passenger (Tandem style) will do, You still use the family car and old infrastructure for family trips etc.
Deploy on a commuter route by commuter route basis.