Tinkle, for reasons that escape me, is surprisingly chill when it comes to riding in cars. So far as I know, he's the only cat I've ever heard of that actually ASKS to ride in a vehicle.
Yep, you heard that right. I had to run an errand this afternoon, and I was waiting in the truck for The Queen to join me. I looked over into the front yard, and there was Tinkle walking up. He sat down, looked me right in the eye and meowed. So, I opened the passenger door, and he just hops up in the truck pretty as you please.
Tinkle enjoyed some one on one Daddy Hawk loving time, and then The Queen joined us. Tinkle showed no interest in leaving; and, since it was cool out and a short trip, we just ran our errand with him along for the ride.
He curled up in the backseat and chilled. Sometimes he would come up front to say hi or get his ears scratched. When got home, he got out of the car with us.