22: CB Radios
Heavily influenced by the movie ‘Smokey & The Bandit’ and the fact that cellphones were nonexistent, cars from the ’80s had the option to come with a CB Radio. These are great for two-way contact but they are also difficult to use. The CB Radio fad seemed to die off quickly as cellphones became universally accepted.
Interestingly enough, CB radios made a sort of resurgence in the last couple of years, becoming popular with outdoor enthusiasts who go off-roading a lot. A CB Radio can be a cost-effective method for communication in an emergency or bad weather. Seems that some technology goes away and comes back again.