Ah, you shoulda just got a milk crate and sat it on the floor, just don't romp on it. hehe
My buddy and I once took his '67 coupe to the carwash, minus the carpet and rear seats, to vacuum out and wash out the interior. of his car so we could sand out any rust and paint it as we had already done the bottom of the car. We sat the front seats in it, but didn't put nuts on the studs. On the way to the carwash, yes, at a stoplight, we had some kid in another vehicle kept reving it up and acting like he wanted to race, we sorta forgot the seats weren't bolted down, light changed, he romped on it and the next thing anyone from the outside saw was our legs, LOL!!