Flag. The year? 21XX. The locomotives have been modified to run on an extremely clean fuel. To preserve the past, they've kept the locomotives in the same shape. However, they HAVE been modified. Percy was involved in an accident that blinded him, and basically destroyed his vocal chords, having it replaced by an AI voice, that translates what he says on-spot into an AI voice. Without it, Percy's voice is a soft, raspy whisper. Percy has also obtained eye damage from looking at all the bright lights. James challenged him to look at the sun for a minute, and he did. Safe to say, Percy gained 5 bucks that day but lost his eyesight.... Thomas was involved with an accident with Toby, blinding Thomas. He cannot see too well, but, with his visor, he can see perfectly. Toby, however, was scrapped. Old technology, especially made of wood, wasn't worth keeping around anymore, especially when it's destroyed. Thomas knew Percy was insecure about his new voice, so Thomas willingly signed up to have himself modified with it. Of course, he can turn it on and off if he wants to.