You can't create a rider from scratch, nor is there any sort of bike customization beyond some basic tuning options; this is bare- MotoGP '07 Hands-On - IGN
The 2007 MotoGP season marked a technical shift to 800cc engines, highlighted by Casey Stoner’s dominant championship win for Ducati. The year also featured two distinct video games, with a THQ version for Xbox 360 focusing on arcade-style play and a Capcom version for PlayStation 2 delivering a simulation experience. Read more at IGN . MotoGP 07 Review - GameSpot MotoGP '07