I like the tracked one, very cool.
If you were an ex Pat Brit you would know what a Reliant Robin was and how much scorn and derision was heaped upon the design.
A few lads in the UK took one and like some of your creations turned it into a militaryesque machine, perhaps it will give you some ideas for a larger machine.
Love the creations, keep them coming.
https://www.youtube.com/watch?v=XSQCwaSO6cQ