Latest U.P.S. Fuel-Saving Strategies: Leg Muscles and Hydraulics - New York Times After a pilot run in 2007, United Parcel Service is once again adding bicycle carriers to meet its holiday demand. It’s a tack that, like alternative fuel vehicles and other measures the company has historically taken to reduce operational costs, provides an attending environmental benefit in the form of reduced carbon-dioxide emissions. Of course, each U.P.S. bike delivery system (typically a $350 mountain bike pulling a custom trailer) can haul only 15 to 20 packages per trip — a mere fraction of what a truck can deliver. Nonetheless, the company estimates that for every three bikes deployed during peak season on the West Coast, it will save around 17 gallons of fuel per day and about $38,000 dollars in vehicle maintenance costs.