Mike Casteel, director of fleet procurement for UPS, recently gave a keynote address on “the future of fuels” at the annual meeting of the Fuels Institute in Dallas, Texas. Afterwards, Fuels Institute Executive Director John Eichberger interviewed Casteel, who has more than 40 years of logistics, energy and automotive experience. Below is their candid chat about strategy, alternative vehicles and fuels and the economics of sustainability.

Eichberger: You have 10,000 alternative fuel and advanced technology vehicles worldwide. The best environmental program or strategy is meaningless if it’s not economically sustainable. Are there other motivations?

By Mike Casteel, UPS