Bicycles are the best guerilla transportation. Virtually silent, all-terrain, cheap to build, easy to repair with swappable components and simple tools. If you have a lot of cargo you can strap it on and walk beside it and carry a lot more than you would by hand. No consumables required beyond the provisions that you already need. Easily hidden and has plausible deniability if discovered. Transportation doubles as PT, and it improves battlefield endurance.