Just learned about this project today and it's more or less exactly what I'm looking for. If I can build something that I can steer and pull implements with, and that I can then mount my own control box onto... One of my long term goals is building some farm bot orchestration software. For example, if a tractor's battery gets low enough, I'd want it to automatically drop its implement, go charge / battery swap, and either it picks up where it left off or, if another tractor bot with a full battery is available, the task gets handed off to the new bot.