A lot of folks fall into their cars like an i beam, for these folks the Volt is a challenge because they hit their head as they fall in.
Perhaps as a people we are just too darn lazy, you know bending over and entering at anything other than a free fall is far too challenging to pull off.
This coming from a 6' 3" guy who has zero issues with the front or back, my assumption would be if you hit your head once you don't do it again but I've been proven wrong.