 Road & Track Magazine announces the top 5 cars in their Readers  Choice competition for new 2004 vehicles. The BMW 5 Series, Mazda RX-8, Nissan 350Z Roadster, Porsche 911 GT3 and the Subaru Impreza WRX Sti are reviewed by 4-Time Trans-Am Champion Tommy Kendall, Road & Track contributors and readers including Jay Leno.