This time i used Coreldraw differently.

The body is as slender as possible at the top and bottom. The area where the legs, feet and the arms are are wider. They create some kind of bubble. The lower side of that bubble can rotate outwards so the legs can be lowered. The bombbaydoor is of very light material and not so rigid. That way is will not crush the leg of the rider during a fall. It will crumble. The upper part of the bubble serves as protection during a fall. It is very strong and rigid. The entire front still rotates to give access to the seat.