Is it plug in only?
Because if it is then the market for it will be small.
Make the batteries into swappable units, and allow one or more of the swappable units to be replaced by a petrol, diesel, fuel-cell, hamster or whatever additional energy source.
Batteries and a solar cell will only be good for very local trips.
Also the electric motor needs to drive it at 60mph at least, any less and it won't be able to keep up with modern traffic, so people will (again) not buy one.
Aside from that it looks a good effort, though I do wonder if the design gets in the way of practicality.
The next thing is to get the government to give an electric vehicle away when people reach 18 - don't give them an excuse to go petrol...