10. BMW Z1
The BMW Z1 captured imaginations with its radical retractable doors that dropped into the sills, along with its use of plastic body panels and a cutting-edge chassis. It was a true technological showcase for the late 1980s, allowing BMW engineers to experiment with new concepts.
However, the complexity and cost of these innovations limited the Z1’s production to just over 8,000 units. Its bold vision set the stage for future BMW roadsters, but mass-market acceptance proved elusive. Top Gear