10. Chevrolet Express
The Chevrolet Express and its “professional grade” counterpart, the GMC Savana are about as old as vehicles get. These full-size vans are built on an architecture that dates back to at least the mid 1990s and probably even further than that. As hard-working schleppers go neither is very efficient, whether you’re talking about interior space or fuel consumption. Ford has finally phased out is long-obsolete E-Series vans and is replacing them with their much more modern Transit lineup; it’s time GM made the same move. The Express and Savana are repulsive.