Oh yeah, been there done that, still trying to figure it out.....
http://forums.pelicanparts.com/showthread.php?t=259359&highlight=cat
The other day I left for work and the cat was sleeping on the hood. I started the car and backed out of the driveway and went down the rd ~100yrds and he wouldn't jump off. Drove him home and took him off. Something about driving down the hwy at 75mph didn't seem right. Well, I didn't want to 'hear' it from the wife...