Marvellous.
One project I've always fancied at some point in the future is an electric bike. I want to retrofit one to an old, heavy bike and do a camp jockey impression as I overtake someone on a road bike up a big steep hill.
We laughed at the C5 back in the eighties -- but I think that Sinclair gave us the solution (personal electric transport) before most of us had realised we would have a problem (congestion, fuel prices, climate change). Nowadays, almost every time that I go out on the roads in my area, I see someone riding an electric bicycle.
It won't be long before these ungainly bikes are superseded by electric mopeds. And once we have overcome the huge mental block that we seem to have whenever somebody suggests that we power our transportation device using electricity rather than oil, then moving from two wheels to three wheels to four wheels really is a tiny step.