The city of San Francisco's garbage/recycling company is currently testing out a hydrogen/electric powered garbage truck that can be used to collect both household garbage and recycling materials. One fill up of H2 will allow the truck to operate for three days, compared with just one day for their diesel-powered trucks, which need to be refueled every day. Plus, it is a lot quieter, as the H2 is used to recharge a battery, which then supplies electricity to the motor which drives the truck. However, it does cost $1 million a copy, compared with half that amount for a typical diesel truck.