The idea of a street racer is pretty cool, but I think you need to show the main character actually racing to show how awesome she is. It's show vs. tell.
Here's some advice from Maria V Snyder, author of the Poison Study series:
A common writing mistake is to tell the reader the events of a story or tell the reader how a character is feeling. Journalism is an acceptable method of telling, of presenting the facts, but fiction... Show more
time writing a book i think that's a pretty good start. you know you have great ideas but there are a few errors if you correct them then i don't know why you won't get more fans.and one more thing write more, not like a summary if you understand what i mean.
other than that i LOVE this book. well done. can't wait for more^_^