Pioneer's solution () is very interesting. The single DIN DVD Navigation system ($2400) can be used on it's own with voice commands an recognition or accompanied by a 7" motorized retracting widescreen ($1000) to display the current route in three views (). An overhead, classic map style; a 3 dimensional "driver's view;" and a split screen mode with plenty of options. A CUE receiver () can also be added seperately as a means to advise you of traffic jams and reroute your course appropriately or to act as a concierge service to make reservations, send flowers, or check the latest movie listings. The DVD Navigation unit is all voice recognition. If you want a different route just say "reroute course." If you don't like travelling on freeways, just tell the unit that by saying "exclude freeways." Perhaps you want to find the "Fastest route," or the "shortest route." And when you're on an interstate with an exit coming up the GPS unit will switch to a 3Dimension view showing the design of the exit ramp and routing you appropriately. Great for the Florida Turnpike

Alpine's Navigation system is yet another interesting unit () but I find Pioneer's modular design and upgradeability very useful.
If you're interested in radar detection but hate those cheap Radio Shack brand, try the custom installed, custom fitted K40 Electronic's "Undetectable" unit (). If you're worried about laser's detecting your speed, just buy the coveted "Laser DifuserPlus" (same page).
I can't wait until I get some extra money. My car is going to be full of this kind of stuff! Forget lasering my eyes. I'm getting GPS, radar detectors, proximity sensors, night vision windshield displays... then I won't have to see at all!
Does anyone have any more information on any kind of car modifying. Chips, supercoolers ... wheels, body kits ... XM Radios, GPS Nav ... Radar detectors ... anything "aftermarket" regarding cars. I don't car if it's just a great paint job. I want this thread to be full of car info.