The club-cab F250 Super Duty Ford loaned to me was powered by their 6.8-liter Triton V10, which boasts the same towing capacity as the diesel. Its dominating dimensions and blistering acceleration quickly earned it a nickname -- the Testosterone Truck. Stomp on the gas pedal and hold on to your hat -- the engine wails like hurricane, and the truck takes off like it's been hit by one. The trade off is the 9.5 mpg I averaged in mixed driving, compared to a steady 16.5 from the diesel-powered Super Duty. No doubt the optional 4.30:1 final-drive ratio contributed both to the truck's rocket-like acceleration and rocket-like fuel economy. Still, if you're looking for tremendous towing ability and muscle-car performance from a King Kong-sized truck, the V10-powered Super Duty is worth a look.