OK, I thought this might be coming. the two airport roll-alongs at the back of the pile go behind the seats....nothing breakable in them. two cylindrical containers (recommend using folding lawn chair bags and have your tailor install zippers full length..ideal for underwear, socks and rolled T-shirts.) these go behind the seats, beside the roll-alongs. Now sit in each seat and push back to compress. The vest and soft hoodie at the front of the pile, go one on each side on top of the suitcases.
The tent is a minimalist two person ( fits 1 1/2), the sleeping bag was a super thin summer bicycle bag, an aerolight sleeping pad and sail-silk ground sheet. All soft, crushable, and able to fit in the front trunk along with the rollerblades and helmet. It's a bit like one of those slidey puzzles--you have to move it all around until there are no voids left. Had to leave the mountain bike behind and rent one in Moab.
The largish red and black bag went just in front of the passenger seat, comfortably under their knees.
Small black bag is my map, trip log, etc. bag. That was the only thing on the passenger seat since I wanted it handy, and could have sat beside, or on the lap of a passenger.
Actually I also had a 2 quart ice cream pail with some detailing supplies tucked in the clamshell (where the oil-cooler is going to go)
And it has nothing to do with the fact that the Canadian cars were all just a little bit bigger.