The “messy middle” is a term closely associated with NACFE. It describes the period between today’s diesel-dominant market and a zero-emission freight future. NACFE’s core point is simple: This is not a transition where one new technology cleanly replaces an old one. Instead, fleets must evaluate multiple energy pathways, vehicle platforms, and operational realities simultaneously.

Fuel Price Volatility Is Reshaping Fleet Economics. Why More Fleets Are Re-Evaluating Their Vehicle Technology Mix