Express coaches

The express coaches are spawnable at Knapford Station in all the games. They come in red and green. They are also able to change between the big and small windows.

Trivia:

 * On the CBR twitter Speedy showed some blue express coaches. These will not be coming to the game though.
 * At Knapford Station they spawn with two coaches and a brake coach in ToS. These are the most that an engine can pull up the Knapford Viaduct.
 * These are the same basis of the coaches at Vicarstown and Spencer's Coaches.