A vehicle includes a roof, a roof part kinematic system (RPKS), and a
transmission kinematic system (TKS). The roof includes roof parts movably
connected together to be movable between a closed position in which the
parts cover the vehicle interior and a stored position in which the roof
parts expose the vehicle interior. The RPKS includes a guide rod
pivotably supported at one end about a vehicle body-side rotary joint and
pivotably supported at another end to one of the parts to movably connect
the part to the vehicle such that upon RPKS actuation the RPKS moves the
roof part between the positions. The TKS has a spring connected at one
end to the guide rod. The spring acts on the guide rod with a swivel
torque about the first rotary joint during the part transfer. The spring
orientation traverses the first rotary joint during the part transfer.