But the folks at Hennessey saw it as an opportunity to make something huge - Mammoth, if you will. That's where this truck ...

Hennessey Performance took things to the thrilling Pennzoil Proving Ground where their very own Ford GT supercar faced off against their monstrous creation, the 1200-horsepower Mammoth 1200 RAM TRX.

Hennessey, renowned for its hypercars and high-performance vehicles, has announced the launch of its first light strike-force ...

American car and truck specialist Hennessey announced the creation of a defense unit, the Jeep Gladiator Rubicon-based ...

Hennessey WARHAWK is ultimate strike-force vehicle for military, police, and sportsmen Hennessey creates new division to design, engineer, and ...

Texas-based engine maker Hennessey Performance Engineering has come up with an SUV that's maybe just a little over the top. Based on a Ram TRX pickup truck, 7-passenger Mammoth 1000 features a ...