This book has a little bit of everything in it: Romance including lots of sex, vintage cars, a road trip, crime, and the supernatural. The primary characters are TZ Blake, who is a female mechanic with great skill and Cade Nyland is the rich son of a family that has a major car parts brand but wants to stay out of the suit-wearing demographic.
There are other characters, and the way TZ deals with other drivers plays a major part in the way things go during the race. The "lesson" felt to me to be a bit contrived, however. I find it a bit too preachy.
Other than that, the story was interesting the supernatural element fit within the story fairly well a well.