<p>Earlier this year we debuted Decoder Rings Back, our new feature exclusively for Decoder Ring Plus subscribers. In each installment, Willa gets a listener on the phone and tries her best to answer their question about a cultural mystery. We have been having a blast making these episodes, and if you haven’t heard them, we think you’re missing out. So in the hopes of instilling some FOMO that motivates you to support the work we do here by becoming a Decoder Ring Plus subscriber, here’s a sneak peek at the latest installment.</p><p>This time, we hear from Julia Latino in Massachusetts who’s been baffled for years by a strange sight: dozens of tiny rubber duckies riding on the dashboard of Jeeps. What started this craze, and why <em>Jeeps </em>of all cars?</p><p>Get more of Decoder Ring with Slate Plus! Join for exclusive bonus episodes of Decoder Ring and ad-free listening on all your favorite Slate podcasts. Subscribe from the Decoder Ring show page on <a href="https://podcasts.apple.com/us/podcast/decoder-ring/id1376577202" rel="noopener noreferrer" target="_blank">Apple Podcasts</a> or <a href="https://open.spotify.com/show/3vYNA0Ki5sUHnYC9QwQnKl" rel="noopener noreferrer" target="_blank">Spotify</a>. Or, visit <a href="https://slate.com/podcast-plus?utm_medium=link&amp;utm_campaign=plus_pod&amp;utm_content=Decoder_Ring&amp;utm_source=episode_summary" rel="noopener noreferrer" target="_blank">slate.com/decoderplus</a> for access wherever you listen.</p><p>Need to set up your Slate Plus feed? If you subscribed through Slate.com, check out our <a href="https://slate.com/podcastfaqs#plusbenefits" rel="noopener noreferrer" target="_blank">FAQ</a> at slate.com/podcastfaqs for easy instructions. Members subscribed via Apple Podcasts get automatic access—no setup required.</p><hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>