Today’s invention is a new form of replaceable roof for a convertible car.
Instead of being stacked in the boot and requiring complicated mechanics to install, this design has bonnet and roof profiles identical. When driving open-topped, the two surfaces mate exactly.
When the weather turns, a pole in the middle of the windscreen lifts the roof away from the underbonnet, rotates it about a near-vertical axis and repositions it facing backwards over the passenger compartment.