Last week, General Motors announced that it would end production of the Chevrolet Malibu, which the company first introduced in 1964. Although not exactly a head turner (the Malibu was "so uncool, it was cool," declared the New York Times), the sedan has become an American fixture, even an icon [...] Over the past 60 years, GM produced some 10 million of them. With a price starting at a (relatively) affordable $25,100, Malibu sales exceeded 130,000 vehicles last year, a 13% annual increase and enough to rank as the #3 Chevy model [...] Still, that wasn't enough to keep the car off GM's chopping block. [...] In that regard, it will have plenty of company. Ford stopped producing sedans for the U.S. market in 2018. And it was Sergio Marchionne, the former head of Stellantis, who triggered the headlong retreat in 2016 when he declared that Dodge and Chrysler would stop making sedans. [...] As recently as 2009, U.S. passenger cars [...] outsold light trucks (SUVs, pickups, and minivans), but today they're less then 20% of new car purchases. The death of the Malibu is confirmation, if anyone still needs it, that the Big Three are done building sedans. That decision is bad news for road users, the environment, and budget-conscious consumers—and it may ultimately come around to bite Detroit.