Those old speakers bring back some golden oldie memories! When cars had only AM radios with a single 6"x9" speaker up front, you really didn't know just how bad those speakes sounded. Then, as more and more cars came with FM Stereo radios with front and rear speakers, drive-ins started low-powered (coverage of approximately 1/4 mile radius) FM Stereo broadcasts that greatly improved the quality of the soundtrack and got rid of those lousy sounding speakers.
Plus, you didnt get halfway home only to find the speaker still hanging in your window! I think I still have one hanging around here somwwhere!