I dont see a problem with driving while stoned here in new zealand there are 3 stages of a drivers licence, 1. Learners (a test where you are askd 35 questions and must not get anymore than 3 questions wrong once you get your learners you must only drive between 7am-10pm and have a full licenced driver with you at all times) 2. Restricted, you must pass a little 15min driving test same conditions as a learners licence but you may drive out of the hours if you have a full licenced driver in the passeneger seat and must have this licence for atleast 1year, 3 Full Licence, to get this you are put thru another driving test which last about 45mins. while i was sitting my licence i was as high as a kite and aced all test so stoned driving is defintly not a problem and if pot was legal but stoned driving wasn't i would not be a happy camper