Which I realise brings many challenges but, I just like the idea. I think it could work in lower classes where more plastic and aluminium.
Note to self, add more armour :P

Bit worried about size, after comments on here. But it's definitely the right model shown in the Haynes Manual.
If the drill batteries being used are NiCDs or NiMH (are you aware of what type they are?), then they'll be OK for the 12A ESC (my original attempt with The Honey Badger 1.0 basically took a pair of dismantled drills, mounted them on a garden planer with sellotape and wire it all together... worked well until I drove it into a glass picture frame :S).

The concern was that if it was using Lithium batteries, the amperage coming out of them would likely cook the speed controller. I spent a age trying to find a LiFePO4 battery that would go with my Sabretooth 5A dual ESC for my Beetleweight/Antweight because the C rating of the battery x the amphours quoted often meant I was over the top of the peak that the ESC could handle.