Kenworth at the 2013 Mid America Trucking Show

Kevin Baney, Kenworth's chief engineer, stands in front of two of the OEM's new T880 model vocational truck -- offered with two different hood sizes depending on whether customers spec the nes Paccar MX-13 engine in it or not.

More cab interior space and wider opening doors are just two of the key features on the new T880.

The new T680 52-in. mid-roof sleeper tractor. The low sleeper roof is made to match regional tanker and flatbed operational needs without sacrificing driver comforts.

This version of the T680 52-in. mid-roof sleeper comes with an aerodynamic roof cap and extra upper bunk storage space.

This is a CNG-powered T800 roll on/roll off truck, powered by the new Cummins ISX 12 G engine. It carriers 82 'gas gallon equivalents' or GGEs worht of natural gas, 41 per side tank.

A W900L 'glider' kit designed to support post-2007 emission engines. All it lacks is an engine and a transmission; once those are installed though the buyer and not the OEM must 'federalize' it by paying taxes, etc. Kenworth sells about 1,000 of these a year.

The T680 'Advantage' demonstration truck, showing off the kinds of aerodynamic, anti-idling, and other improvements Kenworth can offer when a 'system approach' is taken when spec'ing a vehicle.

A specially-designed K270 cabover modified by Kenworth's brother company Leyland in the U.K. The special cab roof and side fairings, combined with aerodynamically-shaped body, can improve fuel economy 8% at highways speeds. Kenworth is still assessing whether to offer such options in the U.S.

A T680 in daycab configuration.

A display showing off color and cab interior trim options for the T680.

A close-up of the T680 dashboard display.

A close-up of the T680 sleeper berth options display.