Don't shoot me for being a pessimist, but that pic is part of the reason I decided NOT to buy a Walker. For all the bucks they have wrapped up in that (nice, but overkill) setup, I can buy a backpack blower (or 2) & a new paint job for my truck.
My bobcat has a 45 gallon rubbermaid trash can that you lift off the bagger, dump into the back of pickup bed, & go do the next lawn. Extra cans cost about $25, so I could replace & go, then dump them all when done. And I'm STILL bagging at 61" cut, & at a faster ground speed.
Don't get me wrong, I'm a fabricating nut myself, but that's alot of TIME, cost & materials to make up for a mower's shortcomings. I don't EVEN want to know how much that trailer weighs EMPTY.
Also, if he ever got rid of that for ANY reason, he'd never get his $$ back out of it.
Nice work, just not practical for me. Too bad about the carport shelter; I figured he'd check with zoning first.