 The series also released various merchandise, including CDs, trading cards, stickers, and even die-cast cars.In 2015, a sequel series, "Return Racers", began serialization in Shogakukan's "CoroCoro Aniki" magazine, 20 years after the original series' serialization.A spinoff manga, which focuses on Tsubasa, was serialized on "CoroCoro Ichiban" on August 2017.