Sometimes, even concept cars evolve. Take the Nissan Pivo, an ungainly, all-electric bubble-on-wheels that first appeared in 2005 at the Tokyo Motor Show. The first version was pretty round ...

Every other year, Nissan trots out another Pivo concept to the Tokyo Motor Show, and each successive version is weirder than the next.But this latest version – the predictably named Pivo 3 ...