Hot on the Hoffa trail Taylor cop thinks he has the answer to 1975 vanishing of union leader July 1, 2007 BY JOEL THURTELL FREE PRESS STAFF WRITER Jimmy Hoffa's last car ride took less than two minutes. On July 30, 1975, he rode one long block south from a two-story house at 17841 Beaverland in Detroit's tough Brightmoor neighborhood and turned right -- west -- on Grand River Ave. He passed the greens of William Rogell Golf Course and a scenic footbridge, crossed the woodsy Rouge River, cruised past the brown brick Redford Granite Co. building and the Mt....