Train Sim World: Great Western Express is an add-on for the driver simulator with a first-person view — Train Sim World: CSX Heavy Haul. You will be driving the HST high-speed train on the Great Western Main Line in the UK. Departing from London Paddington Station, you'll encounter heavy train traffic, changing traffic lights and other challenges that can strain your nerves to the limit. You can also take any passing train and get off at any station in the new “Trains” mode. Control trains or just ride in the cockpit.