On Feb 25, 9:49*am, rtc wrote:
The 45 rpm car record players were mostly made by Automatic Radio; some
were made by an RCA subsidiary. *They actually worked amazingly well as
far as tracking the records, and sounded quite good playing through the
tube-type car radios. *But they were real record-eaters since the pickup
arm was spring-loaded to keep the stylus in contact with the record
groove during typical highway vibration. *The pressure on the records
was in ounces, not grams.

Chrysler made the first car players in the late 1950s; their system was
called "Hi-Way Hi-Fi." *The name was somewhat of a misnomer since the
records rotated at 16 2/3 rpm. *The wow and flutter was pretty bad, plus
you were limited to a repertoire of proprietary records you could only
buy from your Chrysler-Plymouth-DeSoto-Dodge dealer.

HIGHWAY HI-FI - Where The Vinyl Meets the Road
http://ookworld.com/hiwayhifi.html