" ... deploy the Kenworth hybrid tractors to Atlanta, Boston, Chicago, Dallas, Denver, Detroit, Houston, Los Angeles, Miami, Montreal, New Orleans, New York, Portland (Ore.), San Antonio, San Francisco, Seattle, Tampa, Toronto, Vancouver, and Washington, D.C. ... hybrid trucks (rated at 33,000 lb. GVW) will be deployed to Albuquerque, Boston, Cincinnati, Columbus (Ohio), Jacksonville (Fla.), Knoxville, Las Vegas, Missoula, New Orleans, and Seattle, joining CCE’s fleet of 120 Kenworth 12-bay hybrid delivery trucks."
" ... Advanced powertrain controls ... select the ideal power mode, smoothly switching among electric only, combined diesel and electric, and diesel only power modes. Electricity generated through regenerative braking is stored and used for acceleration, assisting the diesel engine...."
Via: Kenworth LINK