With the shift in regulatory priorities under the Trump administration, what NACFE has dubbed the "messy middle" of alternative fuel and powertrain transition may have become a little messier -- yet that may be positive news for heavy-duty truck owners.

In this episode of HDT Talks Trucking, HDT's Deborah Lockridge speaks with Mike Roeth, Executive Director of the North American Council for Freight Efficiency, about the latest insights from Run on Less – Messy Middle.

The demonstration tracked trucks using multiple powertrains — including diesel, natural gas, renewable fuels, and battery-electric — while collecting millions of data points from real-world operations.

Roeth explains what fleets are learning about:

• Battery-electric truck performance and charging
• Renewable diesel and biodiesel adoption
• The resurgence of natural gas with renewable natural gas (RNG)
• How data and telematics are helping fleets evaluate new technologies
• Why trucking may rely on multiple fuels for decades