It will be fine as long as car heater can keep vehicle around 27-28C and you can stand the heat. Careful driving drowsy with heat. IRT stops; vehicle will cool down very fast if you go to rest room and/or get food. Would help to get a large disposable cooler that enclosure can fit in and use it to help keep heat inside. I've traveled for 9 hours with my ABF in 10G tank inside a cooler and it was just pissed at me for couple days.