So as I've posted elsewhere, I'm going to be taking a long road trip up to Canada soon. In Canada, it's highly recommended, if not actually required, to have your headlights on during the day. Can anybody tell me how much this will affect my range? I presume not a lot, since they are LEDs, but it would be nice to have an idea. Also, since this will be my first road trip in this car, and it will be summer, how much does A/C affect range? Should I use it sparingly, or is the effect minimal?