Today, my father and I built our wooden (a.k.a. redneck) car rotisserie using a few videos from YouTube and a couple of articles as a reference point. About $65 worth of lumber using three 2x6, a 2x4, and in a number of bolts (see receipt image) we were able to create a stable and safe rotisserie. It was relatively easy to make and I'll be going back to get a few extra bolts for added security so when you look at the receipt below you want to add another 4 or 5 bolts. Also, I'm sure there's a more scientific way to make our arch, but using a broken Hulu hoop work just fine.
Once installed on the car, I could easily push it forward and bring it back to a resting position without feeling like I was going to get crushed or push it through the wall. It was extremely stable to the point that you could've stood on it without fear of a tipping over. For just an added level of safety I did put jackstands underneath the front and rear of the vehicle.
It was surprisingly easy to make and obviously is very beneficial to getting out the underside of the car. I've got a video too, but am having difficulty attaching it......I will keep trying.