General Motors told 1,300 employees at its Detroit-Hamtramck factory that they were being “temporarily laid off” for five weeks as the company halts production of the Chevrolet Volt, the Detroit Free Press reports. “Even with sales up in February over January, we are still seeking to align our production with demand,” said GM spokesman Chris Lee. “We needed to maintain proper inventory and make sure that we continued to meet market demand,” he told The Hill in a phone interview.