Throughout automotive history, numerous vehicles have introduced groundbreaking technologies and designs that, at their inception, went largely unnoticed. These unsung innovations have since become integral to modern automotive engineering, shaping the way we drive today. From pioneering safety features to revolutionary manufacturing processes, these cars laid the foundation for advancements that have become industry standards. In this article, we explore 15 such vehicles that, despite their initial underappreciation, have left an indelible mark on the automotive world.