My 2 cents. I personally love the concept design. BTW the doors shouldn't be heavy, my summer car is a DELOREAN and NO they are NOT ungodly heavy, just 2 gas struts and a special torsion bar that does the trick.
They also have enough power to just pop them and they open with there own force, best door popper I ever bought! And I only need 12 inches of clearance to open/close my doors yay for me impossible to park me in. Well don't bash the Gull wings until you OWN a car with them yourself.
Darrell