Have any of you ever tried to carry a weight bench?

Hi Guys
I was always fit until I started driving a truck and then in less than 2 1/2 years I gained over 100 lbs. ummm...love chicken fried steak.
A few months ago I took control over my on road menu and now eat like I used to. (chicken breast and veggies).
Also I bought a 100 lb weight set and lift some inside my truck and sometimes I park in a quiet corner or behind a shopping mall and lift outside my truck. ( Before becoming a driver I lifted for years every other day)
So, I am thinking maybe some of you lift and have found a weight bench that can fold up and be bungied to the back of my cab on the catwalk?
Any advice?
bye the way, just lifting without the bench and haveing stopped eating at truck stops I have lost 38 lbs in 3 months....but could get a much better workout with a bench

 

I thought about that and plan on using a motorcycle cover that will firmly attach and protect it....It is worth it to me, I don't want to take the time to hunt a gym 3 times a week.