Clessie Cummins, a forward-thinking engineer and businessman, embarked on an impressive journey to demonstrate the viability of diesel engines in light vehicles. Departing from Indianapolis, Indiana, he drove a specially constructed car powered by one of his patented diesel engines to the bustling National Automobile Show in New York City. This ambitious road trip was both a marketing strategy and a demonstration of the capabilities of diesel technology, showcasing Cummins’ innovations at a time when gasoline engines dominated the automotive landscape. The journey was strenuous, involving long hours of driving and overcoming various challenges presented by the era's road conditions.

At the National Automobile Show, Cummins' diesel-powered vehicle stood out among the other displays, demonstrating not only superior fuel efficiency but also the robustness of diesel engines compared to traditional gasoline engines. This event was crucial in laying the groundwork for the acceptance and eventual proliferation of diesel technology in the automotive sector, which had previously faced skepticism regarding its applicability in passenger vehicles. Industry leaders and automotive journalists praised the vehicle's performance, providing Cummins an opportunity to advocate for the advantages of diesel.

Cummins' arrival at the show marked a significant moment in his career, elevating his profile within the industry and demonstrating his commitment to innovation. It also highlighted a pivotal shift towards improved engine technologies, setting a precedent for future developments in diesel mechanics and their application in a range of vehicles beyond commercial trucks and buses. By showcasing his achievements, Cummins contributed to a broader movement that would eventually pivot the automotive industry towards more energy-efficient and robust technologies throughout the 20th century.