Uh...cool. So will this unit be completely proprietary (old-school Mac), or another rebranded Unix (new-school Mac)?
The only cars I own with nav are the ones where it's high-line standard equipment, not optional. (Actually, that's every car except my latest diesel Benz! lol) I'd delete nav in nearly every case if I could -- just another easy way for manufacturers to keep up ever-diminishing profit margins in cars.
Cheers, John