Anyway, it looks like another competitor has joined my offroad race adventure! This bad boy has the biggest engine of the group so far; it looks like it will be a strong contender for the prize!
In my LDRAW screenshots, I've colored green only pieces that can be reasonably easily acquired through Bricklink from U.S. sellers (at the time I made this anyway...). The LDD file attached is in all white and black due to a severe lack of green pieces available (c'mon Lego, gimme more green!).