An interesting 'comment' piece appeared in the Times a few days ago; I'm afraid I got rid of the paper and can't recollect the name of the author, but his main point was that, as an electric car owner in Inner London, his travel to and from work now cost virtually nothing, as opposed to the nearly £6 he used to pay on his Oyster every day. He doesn't have to pay the Congestion Charge, didn't have to pay any Road Tax up to April this year, gets 4 hours parking in Westminster for the same price as a diesel/petrol driver would pay for 10 minutes and even has (at the moment) a free re-charge point. He admits to being quite well-off, and doesn't really see why he and his kind should be the recipients of such perks, to which I can only say Hear! Hear!
Well, as electric cars take off, he probably won't get those perks anymore. Tax relief will go. It will be harder to find charging points. Parking won't be free. The congestion charge will apply....
I guess it does mean that given electric cars aren't that affordable yet, the more affluent benefit more, even if that isn't intentional.