Sloan and his immediate successors faced no serious challenges from Japanese or European automakers and no demands from regulators to abandon fundamental technology. Competition and regulation have forced Barra to put sustaining profits over defending a sprawling global empire. Barra sold or closed GM's money-losing operations in Europe, Australia and Southeast Asian markets. GM's market share and profit in China have fallen as the world's largest auto market has shifted to EVs made by Tesla and by BYD and other Chinese automakers. GM is still No. 1 in U.S. sales volume, but Tesla is by far the more valuable company with a market capitalization of $775 billion to GM's $46 billion. Like Roger Smith, who led GM during the 1980s, Barra has tried to revive investor interest by repositioning GM as a technology enterprise.