jack 
2009 BMW 3 Series Diesel 335d 4dr Sedan (3.0L 6cyl Turbodiesel 6A)
Nav 
 I drove from CA to OR last month. After a 4 hrs drive, I stopped and refueled. and the nav just kept restarting itself again and again, the idrive was unable to function. luckily i got some paper maps or else.  Other than that, it was fun to drive..