Reddit mentions of Jackie Stewart's Principles of Performance Driving

Well, you already know about design, but you could specialize in industrial design, or take another course in ergonomics and such. I have no idea what the job market demands are for car-design, but in a creative place, fresh ideas from other perspectives are usually welcome, so maybe being an architect isn't such a bad position to be in.

Now, you can like cars from varying points of view, you may like to tinker with them, to look at them, or maybe just drive them. If you like the driving part, I'd recommend you go several track days, or try to go to a high performance driving school, just keep in mind they can be expensive. If not, try to save up for a place with serious go karts (try and find some that go to 60mph, but you'll find ones going up to 100 or 120 mph) and learn how to really drive. A good go-kart is cheap fun and acceleration/cornering wise is pretty much on par with a decent, winged, single seater, this means it will corner and brake harder than any supercar car and accelerate on par with most of them.

A couple of books that might help you on the subject of high performance driving would be Thisand this one.

Regarding car shows, the most entertaining one is called Top Gear. It's British and it's more a entertainment show that happens to have cars, but most of us gearheads enjoy it.

I don't know much but if you have any questions ask away :)