Agreed. Plus the synthetic air mattress material is going to be super slippery on the seats and make a ton of noise. Go with roll up foam mattress like this one: https://www.amazon.com/Simmons-BeautySleep-Siesta-Memory-Mattress/dp/B00FLCFI68/ref=sr_1_15?ie=UTF8&qid=1526869585&sr=8-15&keywords=Foam+Camping+Mattress