California is planning on this.
https://www.facebook.com/story.php?story_fbid=pfbid02vXNBPHjNfbjkkj2TW4Gjtabo5mJFxX5vcSUzKSrxchURDeoFca4mvafY58q2te92l&id=100064731756949&post_id=100064731756949_pfbid02vXNBPHjNfbjkkj2TW4Gjtabo5mJFxX5vcSUzKSrxchURDeoFca4mvafY58q2te92l&mibextid=6yaNxA