there isn't a chase system in d20modern, and so it plays like a board game. and can take yards of table space.
Spycraft's Chase system works amazingly well, and it's a lot of fun. Sort of a D20 rock/papers/scissors game. It's dynamic and abstract and allows room for a lot of narative flavor and color. No hotwheels or figures needed. I found that it works well with d20M with very little modification. I'm using it in my Modern Game.