The guys at Alpine are on a roll again with not only that cool Premium radio with HD Radio but they have and showed at the Knotts Berry Farm event a Video input kit. This kit allows for an aftermarket back-up camera to be tied into the stock radio's display. Also Video iPod input, while car is stopped and the parking brake is set.
Pretty cool.

http://www.optomizescion.com/Category.aspx?c=11&sc=90&d=

May be too soon but keep looking at Scion Optomize site. that is where they said it would be sold.