Squint a little and you’ll see the resemblance between the Nissan Alpha-T concept and the production 2004 Titan. Its swooping greenhouse, glowering headlights, and multiple cargo bed tie downs made the jump to Nissan’s first fullsize truck. Otherwise, the Alpha-T is pure showcar insanity. The massive tailgate swings down nearly to the ground on a cantilever, and the bed floor slides out for easier loading and unloading. Longitudinal moonroof panels (like those seen on the later Quest minivan and Maxima sedan) and orange leather kept the Alpha-T firmly mounted in early-2000s fashions.