Funny enough I havent......
Try carting in the rain, its lethal. You spend most of the race facing backwards. Its great fun though as you're concentration levels are literally maxing out. If you drive too slow your tyre temperature goes down and you lose even more grip, go to fast and you are constantly losing the back and fighting to keep it on the road. Having downforce in the wet is so important, you need all the help you can get to find the grip.
Thats one of the reasons why Hamilton struggled all race, he was setup for speed whereas the Ferraris had alot more downforce and therefore sacrificed speed. If the race was dry the Mercedes would have been far faster, but due to poor grip levels with the rain washign off the rubber having downforce was the critical thing.
Brilliant race though, I really did think Hamilton had bolloxed it.