You guys are all missing the most important reason not to have adaptive menus:

This product is meant to be used in the car. It needs to have as many features as possible designed so that they do not require you to look at the screen.

It's very important to be able to get to certain items on the menu totally from memory. That way, the driver spends more time with his eyes on the road instead of getting in accidents.

Scorp, did you know that if you use the remote control to access the menus, you can use the number keys as shortcuts? Check out the Button Guide at www.riocar.org for more details.