This happened in Finland, near Hämeenlinna, in 2009. It happened to be with a rear wheel drive car: BMW.
I had never driven a rear wheel drive rally car before.
I tell you what:
I was glad the first touch happened on a big wide rallycross circuit because I spun twice on my first lap! My passenger, who was the car's previous owner, must have thought: "OMG who is this guy?" The track was wide and there was no danger to hit anything, so at least like this I managed to figure out what the car could do.
Why did it spin?
Simply because I was used to 4 wheel drive, where you can come into corners with blazing guns and brake so late a priest would lose his faith over it.
I had to rethink my approach, have a coffee break, a bit of a chat with my friends, then it was ok.
Unlike WRC cars, where the rear is super stable, in this car I had to brake much earlier. Then I had to turn into corners very smoothly, off the brakes. I waited and applied throttle gently as I got closer to the apex. Then I gunned it and hoped for the best!
After that we took the car on a forest road, it was cool to drive in Finland again!
You can find more pics of this adventure on the BMW page.