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ABunchOfMuniTrolleybusesAtPotreroDivisionInSanFrancisco. Trolleybuses in San Francisco's Potrero Division garage with buses ranging from to The vehicle at the far left is ETI TrSF the two in the center are Flyer Es of and the articulated trolleybus on the right is New Flyer There are several more ETI TrSF trolleybuses on the