I spent some time on the laser cutter to make cases for the hotplates which will be used to heat cure my molds. While I was there I laser cut a prototype chassis for making some tank robots. It is cut from 1/4" MDF and glued together. It is actually quite sturdy for being made from MDF. Down the road I plan to get some laser cut from sheet steel, but this is a good way to test the concept first.
And here are some CAD renderings of what it will look like when I get the high clearance tracks mounted.
Or with simple low clearance track.