< PrevNext > 54. General Motors Detroit Share 2018 U.S.-Booked Air Volume: $80 millionConsolidated U.S. TMC: Amex GBTAutomaker General Motors spent 8 percent less on U.S.-booked business travel in 2018 than in 2017, according to a BTN estimate. Sales increased 1 percent to $147 billion. At year-end 2018, GM had 173,000 employees, 76,000 of whom were salaried, compared with 180,000 employees and 77,000 full-timers in 2017. GM plans further salaried workforce reductions in 2019, including 25 percent fewer executives. GM's 2018 business travel accounted for about 50,100 metric tons of carbon dioxide equivalent emissions, down 20 percent from 2017, but its methodology for both years was to extrapolate travel emissions data from 2013 operations based on the number of GM employees. GM expanded its Maven car sharing operation in 2018 expanded its reach to 24 cities in the U.S., Canada and Australia, six more than one year prior. Its Maven Gig program allows drivers for Uber, Lyft and other on-demand ground transportation providers, as well as food delivery services, to rent or lease cars. GM invested $500 million in Lyft in 2016.