Backed out of the driveway, put it in D and the car flatlined as though the battery had been disconnected. Got out and checked the connection to the battery and it was fine. I left the key in the 'run' position and within 5 seconds, it had power again. Did it again about 30 seconds later. Then all worked fine and got to work alright.
At work I played with it a bit and got it to do it again, while NOT running. Turning it to 'run' a couple times, it lost all power and the gas gauge and odometer started twitching up and down.....just like when you turn it to 'run' the first time. Know what I'm talking about?
Any intuition would be awesome. 1998 Grand Prix SE 3800 with 196K.