It was a Young Adult novel, but with a cover like that, I picked it up.
It's a surprisingly good book, and I found that Felsen was famous for writing these YA hot rod novels.
The first thing that surprised me about it was the author, in 1950, wrote about the 17-year-old driver "rocking and rolling" the car he had built.
I've always thought that was a nautical term, but apparently hot rod enthusiasts of those days picked the term up.
This isn't a feel-good YA novel. There are six or seven deaths in it, all caused by kids speeding -- and the author correctly notes speed is a drug for some kids.
Even adults would enjoy this. And how I wish I could have built my own jalopy out of junked parts, the way these kids did.
Posted by Bob Wallace, who sez, VROOM!