Oh, deer...

The self-preservation instincts of whitetailed deer are hard to figure. If a person sits 25 feet up in a tree in full camouflage, a deer will smell the laundry detergent the camo was washed in three months prior and not come within a quarter mile. On the other hand, put a bunch of lights on a noisy 3,500 lb chunk of steel and pilot it at 55 mph down a rural highway and every deer in the area will plot an intercept course with the accuracy of an Apollo moon mission.