Opening Windows,Sunroof etc.

Id like to suggest,that you can open windows,or sunroofs or convertible roofs on cars,
i guess they are already working on door commands,so you could add that

 

Some one is making a convertiable http://www.beamng.com/threads/437-1949-Cadillac-Series-62-Convertible-unofficial-build-thread

 

That's already done or atleast has a beta released.

 

This should be possible already, unless command beams haven't been introduced yet. Realize that Beamng does not simulate cars, it actually simulates particles which are constructed into cars, only the engine code is car specific. So you can build a sliding window already, if desired. Same with a sunroof or convertible.