Hey all! I'm trying to weigh my options on in-car sleeping. I've seen the Luno Life air mattress' and thought I might try to see if anyone has built any of those raised platforms. It's hard to describe so I attached a picture. If anyone has attempted this and can give me any pointers that would be much appreciated! at this point with the price of lumber, it may turn out to be cheaper to buy the $300 air mattress.