Creative effort, Denis, but to keep you and your dog safe, I would suggest that your dog be put in a crate/carrier that is strapped securely in place on the folded down seats in your rear compartment of your SUV/truck...
Because, just as DanB posted today in his thread, "Life passed before my eyes.
", as he narrowly escaped a head-on collision, "We seen his lady passenger scream and hold her head. With no room to spare he punched it into drive and we cleared each other.
In short, you can be prepared for anything, but you can fix stupid.
So what did I learn? First, pack fresh underwear in the truck. Second, when loading your tow vehicle, pay attention to what you lay in the backseat or open end of an SUV. I had two bikes, various tools, cooler, and a hedgehog in cage (don't ask)."
Additional information on how we transport our two Corgis when pulling our 23' Airstream Safari is found in my posting "Traveling and Pet Safety