So we'd never have to ask for directions again! I have 3 GPS receivers that I use when flying.

My first GPS receiver is a cheapo portable unit (Garmin GSP II+) that I mount on velcro (another manly invention) on top of the panel. It serves as a sort of heads-up display, letting me see navigation info quickly while keeping my eyes looking for traffic (like that other Cessna that I got an all-too-closeup view of this morning.) It doesn't have a built in aviation database so I programmed in all the points of interest here in Colorado.

A second GPS is a portable unit (Lowrance Airmap 100) that mounts on the control wheel. It has an aviation database and shows important terrain features like roads, towns, and rivers.

The most expensive one is installed in the instrument panel and is certifiable for instrument flying (I plan on earning my Instrument Rating next year). It also has a built in communications radio that can be tuned from data contained in the built-in database. It's moving map display isn't as good as my second unit, but it is functional.

Now, I need to get a unit for my car with a highway database...