A History of Short Words

From the New York Times Crossword Puzzle

RPM

Tue, 26 Apr '22
Dashboard stat
Tue, 18 Jan '22
Dashboard reading, for short
Wed, 8 Dec '21
Record speed, for short
Sat, 13 Nov '21
Spinning inits.
Tue, 10 Aug '21
Meas. of engine speed
Wed, 14 Jul '21
Dashboard abbr.