This delightful photo shows a very young and intent George Harrison trying out a Highway Hi-Fi that is installed in an early Jaguar E-Type. The suit and mop-top haircut place this sometime before 1966. I'm sure that the Jaguar experts in the audience can pinpoint the year of the Jaguar from the minimal detail in the photo.
The Highway Hi-Fi was designed for Chrysler products and was one of the earliest non-radio music sources for cars. It played proprietary 7 inch vinyl records and spun them at an even more proprietary 16-2/3 RPM.
A fascinating web site about the device is run by the Imperial Club.