Cummins’ X15N natural gas engine is purpose-built for heavy-duty and long-haul applications. (Image: Cummins)

Fuel supply and costs are a growing concern for consumers and businesses alike. Fleets running medium- and heavy-duty commercial vehicles have many options beyond conventional diesel fuel.

Test your knowledge on the history and current state of alternative fuels with this quiz. And register for SAE’s third annual Hydrogen & Alternative Fuels Summit  to learn more directly from the experts.