I made a quick hack to demonstrate this a few years ago. I didn't maintain it and couldn't find another developer to take over, so it doesn't work anymore. http://devesh.github.io/SuperShareBox/
The kitchen opens today at noon. Instead of speculating about whether having an oven in the delivery truck makes a better pizza, I'll order a pizza today and then order the exact same pizza in August when they start using their oven truck and see if I notice any difference. If anybody else wants to try, you can use my referral code (https://zumepizza.com/#/r/593698), which will give you a free pizza and give me a free pizza credit to fund the August portion of my experiment.
I just hope nobody from Zume reads this and intentionally sabotages today's pizza.