is this possible ?
Well of course you do have to factor in the high purchase cost - in my case I had some money and wanted an electric car so I used it & bought one - I really just converted a figure in a bank's computer into something useful.
That aside though, I might spend that £2.90 for 100 miles if I recharge at our home with a (not very cheap) 16p per unit. For you that will be 1.6 gallons @ about £6 per gallon so £9.60 per 100 miles. I can of course use one of the mostly free recharge points and then it is - er - now't.
I have met some ppl already who don't ever charge @ home & therefore do it all for free. Of course if we constantly go for the 1/2 hour 22 Kwh (or more) rapid charge we will shorten battery life (VW guarantee it for 8 years) but constantly using the 7Kwh charging points shouldn't be too bad. At home I just use the standard house circuit and supplied charger so it is 2 to 3Kwh and best for battery long life (although I read that EV batteries are 'living' way longer than previously thought. Also of course it won't harm them if, say, on the odd journey across Britain with 3 or 4 half-hour rapid charging stops on the way - OK for most of us but not (yet) for reps. (I don't usually drive anything for more than 75 or 90 minutes before wanting a wee or a coffee or a burger anyway).
Oh, and no road tax of course or charges/bans in city centres.