5. Tucker 48
The Tucker 48, introduced in 1948, was a groundbreaking vehicle featuring innovative safety features such as a center-mounted “Cyclops” headlight that swiveled with the steering wheel, enhancing night driving visibility. Despite its advanced design, the car faced significant production challenges and regulatory scrutiny, leading to its discontinuation after only 51 units were produced. These obstacles prevented the Tucker 48 from achieving commercial success, despite its visionary contributions to automotive safety. (history.com)