You could try converting it into a vehicle. Like a mine cart of sorts. The one I made is pretty much just #HHHH. Vehicle control, seat, lights, seatbelt up on front, second row has the engine and gas tank and other car parts plus trunk, and the last three spots.
Hmm, you could set it up like so seat parts>stuff needed to drive>all the trunks you wanna add. Keep the tools you need to dismantle and piece together a vehicle, and some parts needed to put together a simple wheelbarrow. Basically, two steel frames and a wheel.
So, you drive that cart down a safe spot, then build your wheelbarrow on the spot. Collect your items and deposit them on the cart, disassemble your wheelbarrow and put it back in the trunk. And so on and so forth.