Apple IPad for Carputer

Looking at The iPad, looking at the specs, it has 3G,Touchscreen,ipod + Apps,storage, Games,freshness (in terms of newer apps):D
Looking at the specs, if adopted for the Car, It has got everything that one looks in PC (ICE) at 500 $
There will issues with vibration, power supply etc.But What best can we get
Kindly give your opinions