The fine folks at Hammacher Schlemmer have done the improbable and brought the lightbike from Tron to real life.
Product 11862 is powered by a fuel-injected Suzuki 996cc, 4-stroke engine, features hubless wheels made from "former truck tires built up then custom-shaped to fit onto one of two counter-rotating rims spinning within each other, providing the broad-tired authenticity of the computer cycles from the movie." It will set you back a cool $55K. Olivia Wilde not included.
http://a248.e.akamai.net/f/248/9086/1h/s7diod-isorigin.scene7.com/is/image/Hammacher/11862?wid=240&op_sharpen=0&qlt=90,1