Train explosion

So you were a passenger on a blur bullet train everytjing was going on meanwhile in the distance a blue bullrt train exploded but nobody knew infact only the peoplr that inspect the trains knew that there was a bomb planted on the train and if the train goes below 100 kiloneters (max speed id 350) if it goes below 100 kilometers it explodes!! The deactivation fee is 100 billion yen 1000 yen from the city (yen because its japan) anyway enjoy!! You can be the driver or conducter or goverment or a passenger but nobody knows yet grow the story