These are the two models I designed befor I did the Giga Koopa picture. I started with the idea of doing a Kart that looks like Final Destination from Smash Bros Melee, but I relized it would take alot of work to pull off, so never finished, and started to work with the idea of using the Shell Bowser has. The prototype there is a mix of Mario's Kart in the DS game, and Koopa's shell, the finished looks alot better.

I might do another picture later with the Final Destination, the used Design, and a third design, so Bowser has three karts like all the others.