Well, the idea was a spinner proof robot...
And it half-worked, the body was written off, but all 6 motors were still going at the end of the day, it just couldn't move because all of the HDPE on the top and bottom was bend up above the wheels . A new 6WD full body hammer is required, smaller, LiPo powered, and lotsa steel! Will be keeping the 40mm HDPE too; it may not be the strongest stuff, but no spinner is going to go through that, the best both 720 & Troublesome did was take about 2-3mm off the side. Add a steel plate onto that and bingo, steel box of inpenetrability .