Angelic, the characteristics of electric motors are completely different from petrol/gas engines. They don't run out of puff towards the top end. Indeed a decently made one will have a short term burst rating far higher than the rated power with the right controller.
Agree with Jon there are as yet a lot of technical problems with practical use of hydrogen and all current hydrogen is derived from fossil fuels. To break away from that means 'cracking' it from water with electricity but that assumes there is a surplus of electricity around from more urgent uses like cooking my supper

. That said it is one very good way, to a point, to handle the variability of the renewables if we can deal with the storage issues adequately.
With electric cars for virtually all my driving 80-100 miles would be ample. My concerns lie with the life span, how well the capacity holds up over time, the environmental costs in the materials etc etc. The first two working from a battery swap system would be addressed, to a point, in ceasing to be my problem. I'm just not satisfied all the practical and broader environmental issues have been fully worked out well enough yet. Battery swapping for one thing does need to be sorted because it seems to me an absolute essential to practical use and driving uptake of electric cars. Otherwise I'd be quite happy with one for my purposes.
Richard.