As I'm waiting to go on the plane hom, just a quickie: unfortunately it was raining here in Jerez, and this Z4M Roadster has quite short wheelbase so it's a bit tricky in rain ... Couldn't drift it properly until I switched off the sport button, then it was OK ... It's great on the road with DSC switched on, you can really go fast and fun but still safe.
A few pics, that's all that BMW photographer got of me (you can find them bigger, 1600 pix in my gallery) ...
After my 10 laps (not enough and this time they managed to stop me after 10 laps

) I got driven around the same circuit by a BMW instructor in an M5. It was whole lap (except straight) sideways, even the fastest and longest corners (150+ kph in rain). I know it's much easier to drift an M5 (I've driven and drifted it) but I was still impressed.