A regular tank is kind of cool, but you know what's better? A RED tank.
Unfortunately his original toy tank mode was about knee high to a G.I.Joe, so he wasn't that imposing.
Which means that my mini-Warpath is about the right scale to a G.I.Joe figure. Sweet!
For Warpath I used a Halo Heroclix (can't find the one I used now) and added the turret and arm things with green stuff. The vehicle mode is a military Micro Machines tank.
A note on the Autobot logo: it's really hard to paint it that small, so mine is more of a..suggestion...of the logo.