Be honest with yourself. You knew this would happen. Hennessey already performed a 6×6 conversion on the Ford F-150 Raptor, giving birth to the Hennessey VelociRaptor. When the current-generation Chevrolet Silverado debuted, Hennessey was quick on the draw with the Goliath 6×6. So is this bonkers TRX called Mammoth really a surprise?