Yesterday while attempting to merge into traffic from a median, my clutch pedal stuck about 1/2 way up and the engine revs spiked like it was free wheeling. I shifted to second, not really understanding what was happening because I was focused on the oncoming traffic, and the car did the same thing. It was like the clutch completely slipped. I drove a short way, pulled over and pumped the clutch pedal. It seemed normal. There was the distinct smell of clutch when I got to my destination and then a slight clutch burning smell when I drove the car a couple of times after that the same day.
Car has 22000 miles. I drive spiritedly but I don't do burnouts, power-shift or anything else that would be obviously damaging to the clutch. Car is bone-stock, factory tunes, exhaust, etc. Thoughts on possible causes?