The document discusses key trends in audio media in 2018. It notes that podcasts now make up 25% of Slate's revenue, leading them to double their podcast staff and launch new shows. It also discusses the growth of voice activated services through devices like Amazon Echo and Google Home, and their increasing use for delivering news content from organizations. Additionally, it outlines the evolution of in-car media away from traditional radio towards on-demand audio services like Spotify and Pandora that allow selecting content by mood or commute length, and questions whether video may replace audio for entertainment in driverless cars.