Here's a winter XFire tip not related to driving, sort of...

On American cars, one option you have is for the heat to come out at the floor only. This makes sense as heat rises. If your heat is coming out the vents or the defroster, it's not ever really going to make it down to the floor.

The XFire has some options that include the floor, but nothing for floor only. You can still accomplish this by choosing the setting for just floor and vents, then closing the vents. You'll get a nice blast of hot air on your cold feet!