You see, that's why cats have claws:

Torri Hutchinson's cat might just have one less life to live. Hutchison was driving along Interstate 15 one day recently when a motorist kept trying to get her attention and pointing to the roof of her car.
...
She had driven about 10 miles with the cat on top of the car, and didn't even notice the feline when she stopped for gas.

Hang on kitty! Hang on!