That’s a really fun question and the library has lots of resources available for checkout in the sports collection in the J. Erik Jonsson Central Library in downtown Dallas. The Central Library houses one of the largest collections of sports materials in North Texas.
If you want to understand the aerodynamics and get under the hood of racing, I suggest picking up The Physics of NASCAR: How to Make Steel + Gas + Rubber = Speed by Diandra Leslie-Pelecky.
To learn what drives Danica to be a winner, read her autobiography Danica: Crossing the Line.
For a good overview on NASCAR and its history, check out NASCAR: The Thunder of America a great “pedal to the medal in pursuit of the winner’s circle”.
Also have a look at NASCAR Essential: Everything You Need to Know to be a Real Fan! by David Poole and Jim McLaurin.
To impress your girlfriend, I recommend that you race on down to the sports collection at the J. Erik Jonsson Central Library in downtown and sit awhile to see all of the available resources that the library has to offer.