Live out your Mario Kart dreams on the streets of Tokyo
https://edition.cnn.com/travel/article/maricar-tokyo/index.html
If drivers are not accustomed to left-hand-traffic, it's dangerous to drive vehicles in Japan, including Mario Cart.
As well as left-hand-traffic, detail rules of traffic can also be the cause of traffic accidents. For example, in some countries, you can turn left or right, even if signal shows red light.
But, in most part of Japan, it's not the case.
International drivers permit should be revised to let people learn traffic rules in difficult countries where that is valid.
