I'm picking up my new 2010 Prius next week. Has anyone had the iPod integration cable installed on theirs? I know you can use the 12V and aux input in the center console but I was interested in using the steering wheel controls and Nav display to work my iPod. Wondering if it's really worth $300 to buy and have Toyota put it in or if I really need it at all. Thanks for your help--I'm really looking forward to joining the Prius crowd!