Class 4 mechanics' truck

Whether mounted on a Dodge or Ford 10,500-lb. chassis, the DSC12 comes with a 12,000 ft.-lb. telescopic crane and can be equipped with the company's 3203i electric telescopic crane to lift up to 3,200 lbs. and provide 15 ft. of horizontal reach. The DSC12S is mounted on a Mercedes-Benz or Freightliner Sprinter 10,500-lb. chassis. Iowa Mold Tooling Co. Inc.

Medium-duty natural gas truck

Available with a frame- or back-of-cab-mounted tank, the DuraStar's conversion powertrain supports liquefied or compressed natural gas and provides 175 to 300 hp with 460 to 860 lb.-ft. torque. Navistar International Corp.

Medium-duty chassis

Incorporating selective catalyst reduction-based exhaust aftertreatment and a 7-liter engine developed with Volvo Powertrain Development, the six-cylinder diesel GH7 is much more fuel efficient than predecessors. Available in 245 hp or 280 hp performance ratings and transmissions including the Allison 3000 Series automatic. UD Trucks North America Inc.

Runs on compressed or liquefied natural gas

The low-entry and cabover TerraPro models feature a 9-liter Cummins Westport ISL G engine that's rated at 320 hp and a three-way catalytic converter to meet 2010 emissions standards. Mack Trucks Inc.

Consumes up to 50% less fuel

Florida, Michigan, Nevada, and Texas operations that tested the Autocar E3 report collection gains of 3% to 5% and eight times normal brake life. Two-speed hydrostatic hybrid drive maximizes efficiency during stop-and-go and high speeds, reducing annual carbon dioxide emissions by at least 38 tons, the same as removing 6.7 cars from the road or planting 1,586 trees. Autocar LLC.