Can you make it so objects in DB are shaded by lights and shadows from a BSP map? If not, what is the chance of it being added

?
Will their be a command like "intersect object" for bsp's. At the moment I am using four objects with collision for wheels and one for the car to make it tilt on my map. This works well though is very slow, and there is a maxium of 24 object collision's with a bsp so I can't have many cars. Or is there an easier way of doing this (perhaps a dll)?
BSP (in games like halflife...) support animated textures, is it likely that DB will support these?
And finally is it possible to "ghost" certain object in a bsp map from within Hammer, or any other editor (i.e. to make windows)?
Thanks for any help.
If your interested I making a game like GTA 3, and have so far done a lot of the programming and things.