UPS Inc. announced the deployment of 40 new hydraulic hybrid package cars.

Eaton Corp. said Monday it has aligned with the California Hybrid Truck and Bus Voucher Incentive Project to help California-based fleets purchase medium and heavy-duty hybrid trucks.

Sales of hybrid and battery electric heavy- and medium-duty trucks will nearly double worldwide this year, and more than 100,000 will be on roadways by 2017, a research group said.

WASHINGTON — Legislation introduced in the Senate would provide tax credits of up to $24,000 to defray the cost of purchasing hybrid and electric heavy- and medium-duty trucks.

Hybrid engine technology is not yet ready for Class 8 over-the-road trucks, but it is making inroads in other heavy- and medium-duty applications and appears to be performing well, both on the road and in the shop.