Also in the Spring (ie, the weekend after tax day, 15 April), signup for this auto tour:
http://www.beataz.com/
I've gone a few times and it was an interesting drive with ~150 other Euro cars driving the back roads in AZ (and the twisties up to Jerome)
http://maps.google.com/maps?rlz=1T4G...ed=0CBkQ8gEwAA