So one of my current WIP's is a book that one of my friends compares to Death Race. Which I saw two months after coming up with the idea. I like the idea, there's tons of character development and odd relationships/friendships forming all around. However, I am having one little problem. It's a story that revolves heavily around racing and the cars in the races. Yes, it involves characters heavily but their cars, the races, and the modifications to the cars are very important. How do you write a race? Any tips? And better yet: How do you write about cars? Do I tell models in the narrative, in the dialogue? Do I mention modifications? I myself know nothing of cars. I like to watch off road races, but I'm clueless to anything else. However, this is one of my ideas that keeps calling me back again and again. So I have two car savvy people helping me with that. But the problem is in the writing. Help?