Some folks like to take their time on the can. Not Paul Stender. When the 43-year-old former pit mechanic feels the need for speed, he straps himself into his jet-engine-equipped toilet and roars off, trailing flame…Powered by a 50-year-old, 750-pound Boeing jet turbine that Stender bought for $5,000, the “Port-O-Jet” can top 46 mph with a tailwind…Driver sits on the original throne and looks out through a hole in the door.