I'd design a train racing sport and then become a bookie

Review historical train delay timings in a given region, and extrapolate the reasons for them against future train delays. Do so for a variety of regions and cities, to become aware of natural disasters as well as likely geopolitical actions, buildibg up a predictive model that relies on and exceeds the capabilities of this superpower. Bet on or against rideshare services active in the region as appropriate, as well as local business. Determine the likelihood of events like olympics, world cup, etc ocurring in any given city in the near and distant future based on increased service runs. Bet on or against those events ocurring in those cities, on the boom to construction and local businesses in the short term, and on the subsequent economic contraction (that likely leads a reduction in train service by some number of months--also data that can be added to the predictive model). Determine when/where train timings accelerate or appear where they hadn't before, suggesting a technological improvement and/or an expansion in service, suggesting city growth, and bet on the economic expansion in that region.

I hate this, thanks.

Find a bookmaker willing to take large obscure bets and make a killing off the 7.11am arrival at Southampton on Jan 9th 2031 arriving exactly 17 minutes late.

Me living in germany: ooh this is easy money and a good service to society

By going to work for the next 73 years because this power is useless

Betting

By making a webapp that charges you €1 per time you want to see when the train actually arrives at the station.

Want to see the when it gets to the destination station? Another €1.

Forgotten and want to check again? Another €1

Accounts can be topped up with a €5 minimum with a 75¢ fee per top-up so you can never have the exact amount.

I enter into a contract with the government to run a train service. I include a clause that grants me a multi million pound bonus if I run a reliable service.

Do something with AI....?