(Bloomberg) — Volkswagen AG offered to buy the rest of Navistar International Corp. in a $2.9 billion bid to secure a bridgehead in the U.S. heavy-truck market and step up its challenge to Daimler AG and Volvo AB.The expansion was somewhat offset by Volkswagen’s first major divestment since the German automaker skidded into the diesel-emissions scandal in 2015. An agreement to sell industrial machinery unit Renk AG, valued at 760 million euros ($840 million), indicates VW is more inclined to bulk up than slim down, even amid the costly shift to electric cars.The swoop for Navistar, which was first reported […]