today I jumped in the Xfire at 6:30am and without heating her up i started to drive due to being late to work. less than a 1/4 mile later, while I was trying to change the radio channel, i noticed I revving the engine to about 5k RPM because I thought I was in gear, but In fact i was in netrual. No big deal, put her in gear and approached to a light. I stopped and noticed engine is idling rough. Not rough to a point where it looked or sounded like it had a big cam or it was gonna stall, but it was rough enough to shake your butt slighly in the car. I revved her up to a 2k rpm or so thiniking it would get back to normal but nope. I started to drive and oh boy engine started to shake even worse, felt and sounded like eash cylinders werre miss firing, etc. I immediately pulled over, turned the car off. 30 seconds later I restarted to car, and everything was just fine.

Now, what in the hell was that? Any opinions? Previous experiences? It was pretty scary. I just thought maybe it had a small glitch and needed to be recalibrated. But why this even happened in the first place? Kind of worried me.

Thanks folks!