PITTSBURGH — Highmark, the state's largest health insurer, plans to launch a new lower-cost, limited-network health plan that will exclude most hospitals and doctors affiliated with the University of Pittsburgh Medical Center.

The Community Blue plan that will debut on Jan. 1 will cost individuals and businesses about 25 percent less than other health plans.

Highmark has nearly 5 million members, but has been sparring with UPMC since it decided to invest $475 million to take over the West Penn Allegheny Health System. West Penn is a Pittsburgh based hospital network that is UPMC's chief — though much smaller — rival.

UPMC owns 19 hospitals and employs more than 3,200 doctors.

Community Blue will cover people in 29 Western Pennsylvania counties without access to most UPMC hospitals and doctors, but will still offer 50 “in-network” hospitals and 7,600 doctors.

FLAT ROCK, Mich. — Ford is adding 1,200 workers to a suburban Detroit factory to build the Fusion, a sign of confidence that the revamped sedan will be a big hit when it goes on sale this fall.The Fusion is already Ford's best-selling vehicle after the F-Series pickup. Ford hopes to grab even more buyers with the 2013 Fusion, which has improved fuel economy and a sharper, more chiseled design.Ford Americas President Mark Fields told workers at the Flat Rock Assembly Plant Monday that the midsize car segment is growing two times faster than the rest of the U.S. auto industry. The Fusion is one of the top sellers in that segment, behind the Toyota Camry, Honda Accord and Nissan Altima.Ford and other automakers have been hiring at a rapid pace to keep up with U.S. sales, which are expected to increase by 1.5 million this year over the 12.8 million sold in 2011. The industry is in the midst of its strongest growth period since 1996.