A few years back a friend and myself were travelling south on I-5 here in WA. We were coming up on a pickup truck with a in-bed camper on the back. As we were approaching the pickup/camper, we noticed the back door of the camper open up just a bit. A minute later and cat pokes his head out the door. Then, the cat decides to get out of the camper & out onto the bumper. So, we're travelling on the freeway at 65mph and watching this cat standing on the guy's bumper. We're thinking OMG! Next thing we know, the cat moves over to the right edge of the bumper & is poised to jump. We both start shouting out loud "don't do it"! The cat is poised to jump & you can almost see the thought process going thru its head. About 30 seconds later, it jumps...hits the pavement & starts rolling off the side of the shoulder. Luckily for the cat, they were travelling in the right-most lane so it didn't get hit by a car or truck. I pulled forward next to the pickup, we rolled down the passenger window & started honking. Took a few minutes before the people would give us their attention, but finally the driver rolled down the window & we shouted to him that their cat had just jumped out the back. They pulled over at the next exit & we continued on our way. Never got to find out the ending, but I'd be surprised if they found the cat. I am pretty sure the cat survived, but that's just a guess. I'm sure if it did, it was plenty freaked out.