This service, proposed by “Maricar”, allow you to rent karts and race through the streets of Tokyo. Every kart is equipped with mirrors, a bumper and a small flag so you do not get rolled over by the first truck. You are allowed to ride on the road and anyone having a Japanese or international driver’s license can drive these karts. Wearing a helmet is not required, you can choose a costume, rent a Go-pro to record your trip and it is a very nice way to explore Tokyo. Karts are available for rent at a price of ¥2.700 per hour or ¥10.800 for the whole day.
More info: http://maricar.jp/