Linear RFG

The fastest and most advanced (non-sentient) bullet train in the world, the Linear RFG is fully automated; though it does have a driver in case of emergency, the train is controlled from a supercomputer located in a stationary command center located in Metro City.

Perhaps an odd choice of color though.

2001 Robots in Disguise cartoon
The Linear RFG's inaugural journey began at Metro City's central station, where Dorie Dutton made news report on the new train and its operation. The report prompted the Autobots to escort the bullet train on its journey, as there'd been a number of attacks by the Predacons on other trains around the world.

Not long into the trip, the command center was attacked and disabled by Dark Scream, and the humans lost control of the Linear RFG. Up ahead, the Predacons also destroyed a rail bridge, endangering the train. The Autobots called in Team Bullet Train, who contacted the Autobots' young friend Koji Onishi, a passenger on the train. Koji reported that the driver was unable to stop the Linear RFG using the brakes, and that it was speeding up instead. The three Bullet Trains used their link-up manoeuvre to slow the train and, with Optimus Prime's help, stopped it before it plunged from the wrecked bridge.

Once the Predacons were defeated and in retreat, the Linear RFG completed its inaugural run.