Hayes Diversified is only a couple of miles from my house.
Over the last ten years or so I've watched development of the bikes and they've been a frequent sight around town.
They run, too. I rode alongside the owner of the company awhile back on my gas KLR. I waved at him, peeled off onto Interstate 15 haulin arse and when I looked behind me he was right on my butt.
They've made diesel motorcycles fully viable. As I understand it the military demand has delayed production of civillian versions. I wants one.