C-series engines are indeed still powering trucks on the road. Claims That CAT Is Developing A Pickup Truck Appear To Be Completely False With Caterpillar having so much history in the truck ...

Caterpillar's Defense and Federal Products ... More than 50 x 3600 series engines have now been placed in service in different agencies of the U.S. Government around the world.

Caterpillar Marine’s 3500E methanol-ready engine went on display at the International WorkBoat Show in New Orleans this month ...