Editor's note: This Open Diff piece comes from Hemmings Motor News account executive Bradford Kosich, who perpetually has grease beneath his fingernails and some sort of injury from working on his latest project car.

One of the great things about working at Hemmings Motor News is that readers frequently share pictures of their restoration projects with staff members. Just the other day, a reader sent me photos of his 1974 Plymouth Satellite, documenting the entire restoration process. One of the shots featured an old-style horizontal speedometer, which brought me back to the days of my youth and the old Pontiac Bonneville that I learned to drive on. We affectionately called the car "Meatloaf" due to its brown color and large, homogenous shape, but the car's saving grace was the 455-cu.in. V-8 beneath its hood.

As I traveled down this nostalgic road, I remembered a term from my youth that has all but disappeared from today's lexicon…"pinning" the speedometer.

Discuss what terms are approaching obsolescense on Hemmings.