I think this is ubsurd but I have seen here in NJ doggies rideing in the backs of trucks tied to a runner bolted in the middle of the bed. When I visited my father in FL we drove from NJ to Key Largo I had my two pugs in the bed of the truck in a crate with a topper on the truck. They slept most of the ride until it started to rain (The Florida Monsoons ) anyway back to the subject.....I think as long as you have a topper on the truck they will be fine. besides it will be fun to ride with them back there you will have all that room to yourselves. But just to be safe bring your doggie first aid kit.