Looks like this is going to be an interesting year in Japan SuperGT. Honda has announced their participation with their special prepped CRZ GT300 race car.
Starting this year, Honda will enter the GT300 class with a CR-Z equipped with a racing hybrid system, and through a joint project with M-TEC Co., Ltd. Honda will support the racing activities of TEAM MUGEN, which plans to enter GT300 from Round 4 (Sportsland SUGO). The development driver will be Hideki Mutoh, who has competed in the IndyCar® Series and the GT500 class of SUPER GT. - quote from Honda