I just bought this so I have not done much. Dont worry though. The sound and navigation is in and the rims and paint are soon to come . I'ved owned some incredible auto's in my life including a AC 740il BMW and a S class benz and while they might be better cars in certain aspects the realibilty of this car wins hands down.
(UPDATE 4/17/07, Put the rims on)
Dont forget to check out my other cars