This page contains information about the endgame of this game. This includes information such as score calculation, carryovers, and other pertinent information.
This game doesn't end after a certain date.
Grand Prix Story 2 does not have "New Game +". Once the player reached Rank 200 and win Ultra Masterclass GP, all they can do is to try to rise their gameplay points to compete with other players, before Kairosoft launch new update.