The changes keep happening at the top of the hierarchy, as Mark Reuss takes the presidency of General Motors, the company announced today.

Reuss takes over from Dan Ammann, whom it had been previously announced would step down to take over Cruise, GM's autonomous vehicle unit. At the time, Reuss had not bee named as Ammann's successor.

"I am very proud to have spent my entire career at General Motors, and to now take on this new role is truly a great honor," said Reuss, in a statement. "With our current lineup of outstanding cars, trucks, and crossovers around the world, I'm looking forward to keeping our momentum going at full speed."

Reuss moves into this role from his position as head of Global Product Group and Cadillac.

"Mark's global operational experience, deep product knowledge, and strong leadership will serve us well as we continue to strengthen our current business, take advantage of growth opportunities and further define the future of personal mobility," said GM CEO Mary Barra. "Mark has played a critical role in leading the development of the company's award-winning vehicles while transitioning his team to prepare for growing electrification and autonomous technologies."