Where's that supposed to fight, Hilton Head?
Nah, that would have to be an armored rental bicycle...in the summer anyway!
Seriously though, I worked at a golf course/driving range in my youth...Those tires look almost exactly like the tires our carts used. They were most certainly NOT run-flat, or all that accomodating of larger weight loads. We would absolutely chew through tires on the work carts that actually got used to haul tools and materials around. I don't see the good 'ole ez-go as a good chassis to start with for any sort of tactical vehicle. You strap on a couple hundred pounds of weight to one, and I'd be worried about ripping a wheel off if I needed to jump a curb!
Oh well, I guess you work with what you've got.