Philips and Sony developed prototypes for the compact disc (CD) in the mid-to-late 1970s, but due to widespread skepticism at the digital format’s commercial potential, CDs and CD players didn’t become commercially available until 1982. In 1984, Pioneer changed the game by debuting the world’s first car CD player, the CDX-1. It drastically improved upon previously available sound quality—discs held up much better than tapes over time. Plus, the CD’s ability for instant track-skipping was far preferable to time-consuming rewinding or fast-forwarding. During the late ’80s and mid-90s, multi-disc CD changers became popular, giving drivers the ability to switch between up to 10 CDs at a time.