Daytime Running Lights (DRLs) are compulsory in Canada and can't be over-ridden like they can on US models. I was quite involved in some of the discussions around DRLs back in the late 80's / early 90's when they became mandatory here, and there was quite a bit of controversy over their use. Personally, I am a big fan. I've seen many US photos and videos of the Model S with DRLs off, and it made me wonder how many people use them. Do you use the DRL option on your car?