Nesbitt is returning to the U.S. after nearly four years in China, where he led design for GM's international operations division DETROIT -- General Motors has assigned Bryan Nesbitt the new global head of design for Buick amid a broader shuffling of design executives at the company. Nesbitt is returning to the U.S. after nearly four years in China, where he led design for GM's international operations division -- made up of dozens of Asian markets -- and most recently was in charge of design at GM China.