This is the moment Tesla drivers were stranded for hours waiting to charge their cars - after high demand caused charging time to double.The drivers became stuck in a huge line of traffic at the charging station in Louisiana, just off Interstate 10, after the stations started taking longer than usual to charge.Video footage shows the never-ending line of flash cars snaking back through the nearby car park.Frustrated drivers can be seen sitting helplessly in the queue whilst they wait for their turn.An eyewitness said: "I was stopping to get gas when I noticed dozens of cars all waiting in a line."I soon noticed it was a line of Tesla’s waiting their turn to charge up. "When I pulled over and asked the guy how long it took to charge, he said it normally takes 30 minutes but these stations were running slow due to high demand."As a result, each car was taking over an hour to charge which is more than double what they're supposed to. "I hope those people had food on board as they may not have made it home for dinner."The video was filmed on March 12.