Here is a new unit from Peripheral Electronics......The PXANG
It can add Ipod, Aux input, and HD Radio to your factory Radio!
(Ipod and HD Radio Tuner sold seperately)
This unit works with newer :
Fords Lincolns Mercurys
GMs Chevys Pontiacs Caddys Saturns
Toyotas Lexus Hondas VWs Hyundai s Nissans
Here is a Demo Video.....