Mack Trucks is launching a new medium-duty truck line, but the trucks won’t be manufactured in the Lehigh Valley.

A day after announcing it would lay off more than 300 workers, Mack Trucks was able to show off what may be a vehicle of the future.

Mack Trucks has informed employees that it will lay off 305 people at its Lehigh Valley operations in Lower Macungie Township because of lower demand.

A group of a dozen teachers from the Allentown, Salisbury and Whitehall-Coplay school districts will be wrapping up a program at Lehigh Carbon Community College this week that is helping them get involved in developing students’ interest in STEM careers.