I find the weight, and bulk of the R&R cart to be counterproductive in many situations. It's heavy to lift into my car, bulky, and difficult to store with other gear, as well. My rig is very compact, and I can do quite nicely with 1 trip, using a standard, folding type cart. A traditional, L shape dolly. I got mine at GC for $54.
I only use the R&R when I do Casino work, or I need to use a parking garage to get to my destination. For simple in-out deals ... even withOUT a cart, I'm in and out in 2 trips.