Colorado sausage czar Jim Pittenger, aka Biker Jim, is a former repo man who confiscated upwards of 12,000 cars before ditching the life of thievery for a career slinging gourmet sausages from a tricked-out stainless steel cart on Denver’s 16th Street Mall. For Biker Jim, redefining the humble hot dog became his mission. Lines snaked down the block as the sexy scent of grilled sausages and sizzling caramelized onions swirled through the Rocky Mountain air.