THOMAS & FRIENDS™ VENTILATED VAN - MR. JOLLY'S CHOCOLATE FACTORY - HO Scale. Ventilated Box Vans are pieces of rolling stock used for transporting goods and merchandise throughout various railways. They are also simply known as vans or trucks. Bachmann carefully reproduces your favorite Thomas & Friends™ characters in HO Scale. All rolling stock features realistic plastic body shells, all-metal wheels, and international-style hook-and-loop couplers.