using the oven while on the road

Wrap it around the exhaust pipe :)
I would have no problem in a motorhome, would not do it in a trailer.

Just FYI, it is a normally accepted practice to reheat a saved or leftover meal in the same way it was cooked. Cook in oven, reheat in oven, cook in crock pot same, it is not always convenient but it is very hart to reheat a casserole baked in an oven in a skillet.

My youngest daughter was a chef in a upper end restaurant and I am a published Cook, so my thoughts are from professional experience.

As a kid, we did it all the time...obviously if it's real liquidy, might make a mess. If it's already set into a fairly solid mass...not much of an issue.

Not recommending for or against but it's certainly feasible.

I imagine there are some people who would do this and say they do it all the time and have not ever had a problem. I call those people lucky they still have a unit to pull. this falls into the wrong idea as leaving your fridge on and refueling your truck with the flame going in the back of the fridge. not a good idea, a recipe for disaster

We did it a couple of times when we had the mh. I would not with the 5er. Im not in there to watch it.

Wrap it up in foil and put it on your engine!
Yes, I have actually done this and it does work. I've cooked chicken and vegetable meals and more, double wrapped in foil and carefully placed on top of the intake manifold.
We arrived at our destination a few hours later and had a piping hot meal ready!