Here are a couple pics. I believe this is the second or third one of these "all-terrain" carts that Antoine has built. On flat concrete, one person can move it. On very flat grass, two people can move it. However, just the slightest incline will take you up to 3 people pretty quick.
My intent with the oven is to have something that still looks nice in my back yard for my personal use, but can be easily loaded up for transport for catering to parties, etc. I have an electric winch on my trailer that pulls it up and lets in down pretty well.