That's actually very Template-y. There was some discussion recently about how Bombshell Betty's open side and rear windows relieve the bubble behind the notchback roof. It could probably use a windshield though.
...and a front air dam.
Look what
Jason Torchinsky on Jalopnik found:
http://jalopnik.com/amazing-amphibious-corvair-truck-stored-for-30-years-re-1746636375
And the Polo-sized Tatra:
http://jalopnik.com/a-car-you-never-heard-of-the-compact-tatra-that-wasnt-1746271166