The McLaren F1 User Manual
I found this amazing article on subtraction.com! Khoi posted a great short interview on McLaren Design Operations Manager Mark Roberts talking about the design and details that went into the making of this hand illustrated manual, which has now become a collector's piece with only 200 ever being printed. I love the usage of "crashtest dummies" instead of people, always keeping emphasis on the car.
If you love F1, you can find collector's memorabilia here at collectorstudio.com.
And if you're looking for some 3d F1 model files you can find them on Turbosquid.