GM President Mark Reuss blogs about spending time at the industry’s first dedicated testing facility, sharing GM MILFORD PROVING GROUND MEMORIES on its 100th anniversary! I’ve often said that some of my best days at work are spent at our plants, watching our vehicles assembled. It’s an immediate, visceral thrill to see our products come to life. Another place I love to spend workdays happens to be another place where our vehicles come to life…the General Motors Milford Proving Ground...