Ram 1500 TRX-based Hennessey Mammoth 6×6 revealed with 1,200-plus-hp Hellephant engine

What might be the world’s most insane truck is coming, and of course it’s coming from Hennessey Performance Engineering. On Tuesday, HPE announced it will morph the 2021 Ram 1500 TRX into a six-wheeled, Hellephant-powered monster called the Mammoth 6×6.…