I hate hearing this. I know he was always by your side. I wish you and your family the best during this hard time. It's never easy letting go of a furry family member.
I was just looking at an old set of truck manifolds that I have lying around and wondered if that would work on the passenger side for a turbo set up! Definitely going to look into that!
They also make trailer hitches for them. My dad put one on his Smart car and bought a trailer from Harbor Freight, and he used it during hunting season to bring home deer, rather than spend money on fuel in his truck. Also, they do have a small tailgate!
My dad purchased one back in 2010, to save fuel and to keep miles off of his truck. He is 6'4 and I am 6'2, so both not very small people. He and I both can fit in the car comfortably, surprisingly.