 The Ark II was built on the chassis of a dump truck. The truck was  notorious for constantly breaking down between shots. It was also  reportedly hard to operate in crowded areas safely because the  placement of the windows was such that the driver of the Ark was  unable to see clearly. The other vehicle, the Ark Roamer, was built  on a Volkswagen van chassis from a modified "Brubaker Box" kit, and  while it ran well, it had a limited range. The Brubaker group built  both vehicles for the show.