[Vince Ferrer]

would be nice in tight parking spaces. But what if your battery dies or something?

Or it is raining. Somehow it never rains on engineers. The only real world useful alternate door would be to open it up to create a canopy over the entrance.

[6SJ7]

Or it is raining. Somehow it never rains on engineers.

The roll-down doors aren't too bad for rain, but gull-wing doors are a disaster. With the door up, it acts as a gutter to dump rain right into the seating area! These novel doors also are a problem with snow.