He joined the Super Formula with Docomo Team Dandelion Racing .
2015 season champion Stoffel Vandoorne left the series as the reigning champion is not permitted to continue competing in the series .
Stoffel Vandoorne joined the Super Formula with Docomo Team Dandelion Racing .
2015 season champion Stoffel Vandoorne left the series as the reigning champion is not permitted to continue competing in the series .