A little late, but not spoiled. Here's the next podcast episode on all things Interstate: The history of the Interstate Highway system, how Interstates are numbers, a history of California's interstates -- chargeable, non-chargeable, and proposed, control cities, and some of the more controversial questions. This is everything you wanted to know about the Interstates, but were afraid to ask.
On caroutebyroute.org: https://caroutebyroute.org/2023/03/25/carxr-1-09-highway-numbering-interstate-highways/
On Spotify for Podcasters: https://podcasters.spotify.com/pod/show/caroutebyroute/episodes/CARxR-1-09-Highway-Numbering-Interstate-Highways-e214cjo
As always, comments are welcome.