'Global scientific significance' is quite a claim, and perhaps a bit of a stretch  of the imagination, but this is Oxford!  Without question though it is an interesting and worthwhile trial. The question of urban mobility is of course a complex one, but there is no doubt, in the short to medium term at least, EV vehicles will have a large part to play. How we charge them, and what other uses we can have for them (V2G etc) is a important question for all cities and urban areas.