The Cube sure is funky for an old man like me, my first new car was a '76 Pinto.
IMHO, the rear window not wrapping around on the left side has more to do with the bulge for the upper door hinge. Stretching glass must take too much effort.
All that said, I'd rather see a youngster in a Cube than a 1997 Chevy 4X4 with a 6" lift and monsterous tires.
Oops, I did't say that out loud, did I?