I've had cars do illegial u-turns and run me off the road, cut me off on right turns and change lanes into me, and then yell at me because I politely (yeaah right!) pointed out how they caused me to almost make a mess in my shorts. I've found that my bar ends do a great job of detailing the paint of a car door and are great for removing side view mirrors. I removed a gentlemans mirror once after he decided to take my lane. I figured he didn't need something he never used.