I was trying to isolate a slight vibration I was feeling in the car. I think I was going about 60 or 70, slipped the car into neutral to see if the vibration changed. When I put it back in gear it just didn't engage right away and I was already pressing on the fuel to get my speed back up. Surprized me how quickly it revved up! Anyway, it really doesn't appear to have hurt anything as the old plugger ran nice and strong today.