When diesel prices jump, the effect does not stay at the fuel pump. It moves through truck routes, ports, farms, construction sites, grocery aisles, and household budgets. Diesel is the working fuel of the economy, and when it becomes expensive, nearly every business that moves or makes physical goods feels the pressure. The sharp diesel price spikes of recent years, especially the record levels reached in 2022, showed how quickly fuel costs can become a national economic iss