Doge existed before, but Elon and his army of followers pushed Doge's price to the sky! As I remember he was accepting Doge for buying Tesla cars, I wonder how many people (if any?) purchased Tesla with Doge coins?..
No, Tesla has never been sold for dogecoin. There was such an option to buy Tesla for bitcoin, but it was subsequently canceled. After that, Elon Musk announced the sale of Tesla merch for Dogecoin - it was a year ago, and this option is still available.