Sugar loves to go for rides in the car.
He is a great little travel buddy. He goes to the office with me sometimes, but
has actually traveled as far as a 14 hour trip. He does great in the car, and I always have his vest, leash, and carrier. I also travel with my rabbit first aid kit, fresh hay, water, pellets, litter, etc.
Believe me, if you need something for your rabbit while out of town, you don't want to have to try to locate a rabbit specific item in a strange city.