The creator is extremely creative and innovative for having modeled so many independent moving parts in what is already a very unique and unusual vehicle. Computer difficulties can easily be overcome, if you're willing to make a few sacrifices in graphics and eye candy-- so I believe that should have no bearing on rating the vehicle overall.
Strength, weight, raw power, size, width (split front windshield with a pillar post... that's really something else!) It has it all. Good job!
Like the author said, it eats up alot up memory so a powerful PC is recommended. That said, its an absolute beast. It can tackle steep inclines and rocky terrain with relative ease. Its not the fastest vehicle but it is the toughest. Any car chasing you will crumple and any mid sized truck will break before doing serious damage to it.