Wow, Boomerweps, you don't mess around! Thanks for the quick reference measurements, I'm making notes! I do have a LWB with 3rd row seats typically folded flat. Not quite as convenient for work, but more than makes up for it in people hauler + camping modes.
I also use a bag (made by GripNGaff) with my cart - it slides over one of the uprights. Perfect way to carry a tripod, light stands, light modifiers, etc. It extends the overall length of the cart about a foot.
Some day I'll modify a typical poly utility cart to my exact specs and then worry about ramping it into a van. In the meantime, folding the RnR'er isn't a big deal.