All three concepts--the Smart 1000, GT 1000 and Sport 1000--reach back to the early '70s, the so-called "golden age of Ducati." This was when the Italian maker released the first Fabio Taglioni-designed V-twins, making a mark on international roadracing and simultaneously cementing the factory cafe-racer style. The most aggressive concept, the half-faired Smart 1000, takes cues from the racebike that Paul Smart rode to his legendary victory at Imola in '72, as well as the production 750 Supersport. From 50 feet away the Sport 1000 is a spot-on 750 Sport, and the most practical of the three, the GT 1000, borrows liberally from the early '70s 750 GT. Spoked wheels, round taillights, and either black-painted reverse-cone pipes (Sport and Smart) or long, chrome silencers (GT) reek of authenticity.