Guess it was just a matter of time. Arguably, controlling any function on the watch requires hand to wrist and seems more risky than one handed use of the iPhone. Not that it justifies the use at all when driving though.
http://www.geek.com/apple/canadian-man-fined-120-for-using-his-apple-watch-while-driving-1623841/The inevitable has happened a man has been issued a traffic ticket for using his Apple Watch while driving. The ticket, given to one Jeffrey Macesin in Quebec, is for $120 (about $96) and includes a few points on his license. Macesin thought it was cool to use the watch, but apparently the police felt otherwise.