In most states having a DVD (moving pictures) on your dash while driving is illegal. That being said, on my 12 Jeep the nav buttons lock out after three presses when moving. That means the passenger, my wife, can't use the system and she's the navigator to my pilot, so I got a lockpick for it. To me it wasn't worth trying to figure out the wiring under the dash of these computerized cars that we all drive now, and I've done all sorts of retrofit electrical work on older cars.
Every once in a while though, the system gets a bug and plays the reverse camera while I'm driving- very distracting.
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