5. BMW Z1
The BMW Z1 broke new ground with its radical drop-down doors and removable plastic body panels.
While later Z cars like the Z3 and Z4 became icons in their own right, the Z1 stands apart for its willingness to experiment.
BMW’s bold engineering spirit made the Z1 a rolling concept car, influencing the design and technology of future roadsters.
Its futuristic features still capture the imagination of enthusiasts and collectors today.