I got the opportunity to photograph at the first round of 'Eurodrift' at Silverstone the other week (pics on my website). I'd never seen drifting before and really didn't know what to expect.
I was pleasantly surprised on the day... it was quite entertaining. This wasn't really much more than an amateur event, but the potential for providing a decent spectacle was clear. I can imagine that something like D1 would be really quite impressive to watch. I'm certain that this will pick up a strong spectator following over the next few years.
If nothing else, it's an entertaining break from the usual weekend's race meetings!