I miss round headlamps. Ford Ford provided an excellent illustration of how its famous Mustang has aged over the 50 years it's been around.

The company bolted together two halves of the iconic muscle car — one from 1965 and the other from 2015 — at an exhibit at the National Inventors Hall of Fame Museum in Alexandria, Virginia.

The exhibit is also a good display of just how much cars have changed over half a century.

In 1965, a major technological innovation on the Mustang was the self-cancelling turn signal, according to Ford.

The 2015 Mustang, on the other hand, included several new innovations, like knee-level airbags packaged inside the glovebox door.

The years between the two models provided innumerable innovations across the automotive spectrum in safety, efficiency, reliability, comfort, and, of course, performance.