If we used vehicles that weigh a lot less, say 200Kg, we could, in an urban setting, probably get 60km/l of gasoline, instead of 10km/l. Accidents wouldn't be s

If we used vehicles that weigh a lot less, say 200Kg, we could, in an urban setting, probably get 60km/l of gasoline, instead of 10km/l. Accidents wouldn't be so dangerous (https://www.youtube.com/watch?v=ixMVuOslebI https://www.youtube.com/watch?v=ixMVuOslebI) and we could even let younger people drive (you could certainly let a 14yo drive a golf cart). There would be less pollution and less noise.