So here's the deal: I can easily "add" new vehicles to Special Demo Derby, but the only problem is that they have to replace another ones. So, give me suggestions about what new vehicles would you like to see.
Oh, to add new Derby, I have to delete another one, so here are all of the vanilla ones:
1. Monster Trucks - Atlasbreaker
2. Golf Carts - Knoxville
3. SUVs - Swindle, Nordberg, Alaskan, Mag
4. Semi Trucks - Peterliner
5. Sports Cars - Attrazione, Zenith, Vortex, Bezier, Superiore
6. Muscle Cars - Hammerhead, Bootlegger, La Fuerza, Phoenix
7. Farm Equipment - Kent (combine)
8. Short Bus - DonoVan
9. Dozers - Bulldozer, Backhoe
10. Metermaid - Quota
11. O-Ring - O-Ring (heh)
12. ATV - Toad (quad)
13. Buggy - Mongoose
14. Motorcycle - Sabretooth, Sandstorm, Kaneda, Widowmaker, Tetsuo, Kenshin, Shard, Melbourne
15. Septic - Septic
Rememer - you can, for example, make it, like, Backhoe, Atlasbreaker and The Job - possibilities are unlimited

But, remember - if you suggest something, tell the number that would be replaced, for example 15.