Besides, seeing as our roads are exclusively maintained from fuel taxes, I cannot see this going on forever - the government will have to find a way to tax the electricity going into electric cars somehow.
I don't see why something similar couldn't be done for taxes - the car keeps track of kWh used and you just pay tax based on how much you used. Obviously, that runs into certain immediate problems - like, what if you drive abroad? Normally you'd simply buy fuel while abroad, so therefore contribute to taxes there - but with this system this wouldn't work anymore.
Nothing is utopia. In fact any utopia is probably a dystopia.
That is not to say it doesn't have benefits but to suggest the entire population can haul their arse on a bike doing a 20mi round trip every day for 40 years and be hopping along nicely is a dream.
Not to mention the incidental injuries of which my colleagues suffer from, and myself going back a few years (hospital wasn't much fun)
It is easy to avoid incidental injuries, and everyone would much rather the trauma of an incidental cycling accident than the trauma of a highspeed car crash. Mentioning them in just scaremongering. Ride at a safe speed on a proper path and look where your going. If you can't look where you're going, you're going too fast; slow down. (You can't say "proper paths don't exist", because we're talking about the dreamland in which they do, therefore, by definition, they do.)
20 mi round trips are unlikely. You get long trips in cities developed for cars.