Our current major project uses a different codebase, although some of the stuff we're doing on the PC side is likely to benefit car people in future.
The next few projects are likely to use our core codebase, so the car player will benefit more directly. In fact we have already made some MAJOR enhancements to the car software, but we are not incorporating those into the 2.0 branch otherwise the feature creep will never end. I think we need a stable 2.0 before any more features are released (wishful thinking).
Rob