Adjustable sunroof mechanics on a bmw e34 and if the idea is interesting - implement it on all other cars that have a sunroof. The control is the same as on folding roofs, but a little more complicated: a double press on the stick opens the sunroof vertically (raises up), and clamping - moves horizontally, that is, opens completely (hides under the roof) and also on the degree of clamping depends on how much the sunroof will be open. Those who like to ride in a car with a view into the passenger compartment can thus illuminate the passenger compartment and also hear a more detailed sound of the engine and wind.