A test was done in San Diego with the concept of putting magnets in the road for self driving cars. I never thought it was practical due to cost. https://www.l

A test was done in San Diego with the concept of putting magnets in the road for self driving cars. I never thought it was practical due to cost. https://www.latimes.com/archives/la-xpm-1996-06-28-mn-19436-story.html https://www.latimes.com/archives/la-xpm-1996-06-28-mn-19436-...