Autonomous Cars Loom, but the Detroit Auto Show Goes On

Fiat Chrysler's Ram also got big updates, losing more than 200 pounds and giving it a gas-electric hybrid engine option. Both the Silverado and Ram were given more athletic stances and meaner looks. Ford added a diesel engine to its F-150 and rolled out the midsize Ranger. Automakers turn big profits on large pickups. Sales rose nearly 6 percent last year to almost 2.4 million, even though total U.S. auto sales dropped 2 percent.