Its a Z4M Coupe not a Z3 that Dergside was suggesting. AFAIK the same engine as the E46 M3 and a hell of a rare car. Couple of very nice ones in the UK too and I agree with the point that they should start appreciating soon. Not as much as the Z3M of course but gradually so that you shouldnt loose much money on one if you keep it for a couple of years. Stick a nice set of BBS wheels on either of these and you have a serious head turner:
http://www.pistonheads.com/classifie...-m/5568710?v=c
http://www.pistonheads.com/classifie...07/5633179?v=c