Engines Podcast Engines of Our Ingenuity 2819: Folding BicyclesEpisode: 2819 Folding bicycles battle new terrain. Today, altered shapes. Dr. Andy Boyd | Posted on October 11, 2018, 12:01 AM Episode: 2819 Folding bicycles battle new terrain. Today, altered shapes. / To embed this piece of audio in your site, please use this code: <iframe src="https://embed.hpm.io/306285/306284" style="height: 115px; width: 100%;"></iframe> X Share