No but to tell you the truth never seen a car hit one with them on.
Used to have fun with dog whistled driving the neighbors poodle nuts though!:glasses7:
I don't put them on my Trucks, but I have them on my Wifes 300. I have actually been driving that car when I see deer on the side of the road. Have seen them turn away or stop from crossing quite a few times. I do think they work.