Would have to agree with mainwheel.
The first one to come to mind was the bongo, but at least you can hang your arm out the window like in the ute. But the P68 - a tiny little hole with your hand out side it trying to fan air into it dosen't really work. And no vent fan. It was a godsend when it rained while in the air though - you'd stick your hand out just enough to get the wind and moisture straight onto your face and sweat soaked shirt.