In what year was the telephone service first demonstrated between new york and San Francisco?

<br>in what year was the <a href="https://www.brandsreviews.com/search?keyword=telephone">telephone</a>; <a href="https://jetblacktransportation.com/blog/car-service-from-new-york/">car service from new york</a> first demonstrated between new york and San Francisco?<img src="https://burst.shopifycdn.com/photos/new-york-city-sky-scraper-buildings.jpg?width=746&format=pjpg&exif=0&iptc=0"; style="max-width:440px;float:left;padding:10px 10px 10px 0px;border:0px;" alt="" /> <br>