The first 2017 Chrysler Pacifica Hybrid minivan rolled off the production line at Fiat Chrysler’s Windsor Assembly plant Thursday, marking the start of production of the world’s most efficient minivan.

FCA invested nearly $1 billion in the Windsor plant in order to accommodate production of the new Pacifica and Pacifica Hybrid. The Windsor site first began producing minivans for Chrysler in 1983 and has since builtmore than 10 million of the 14.3 million minivans the automaker has sold.

“The nearly 5,900 employees at Windsor Assembly are bringing more than 33 years of minivan production knowledge and expertise to the launch of the Pacifica Hybrid,” said FCA North America manufacturing head Brian Harlow. “They understand, now more than ever, how critical it is for our manufacturing processes to be directly connected to our diverse and expanding customer base.

The Pacifica Hybrid is powered by Chrysler’s 3.6-liter Pentastar V6 engine, which is mated to a unique EVT transmission that houses a small electric motor. Drive for the electric propulsions system comes via a 16 kWh battery pack, which his housed beneath the second row seating. According to EPA estimates, it can travel up to 33 miles on electric power only, equating to a fuel economy rating of 84 MPGe combined.

The 2017 Chrysler Pacifica Hybrid starts at $41,995 in the U.S. before federal tax incentives.