looks interessating but what about the b-pillar....... I mean the it was inventend for a reason to give additional stability to the car if there is an accident or something.
If this car would be hit by another car from the side the driver and passangers would proably be dead even at low speed.
b-pillar give additional protection which is why if still prever the standard doors even if this shit was to be released (for 5 doors car of course if the car would only have 3 doors and no backseat then it would be useful)
and btw you can even enter your car via the car boot if it you are unable to open the side doors, trust me its fun
further more real men enter a car like this