A train company has launched a "never-ending ticket" which will allow the holder to make a free return journey in first class.
Virgin Trains will randomly select one passenger each day who can use the ticket to travel anywhere on its west coast route.
The operator said it will continue the promotion as long as "the social media community keeps it alive".
To be in with a chance of using the ticket, passengers must send a Twitter message to Virgin Trains with the hashtag #NeverEndingTicket stating where they want to go and why.
Patrick McCall, co-chairman of Virgin Trains, said: "Virgin Trains' never-ending ticket is the first of its kind in the world and will give more people the opportunity to travel to some of the amazing destinations that we have on our route.
"We can't wait for the social community to get in on the game and help the ticket live as long as possible."
Once the holder of the ticket has chosen their destination, Virgin Trains will announce where the ticket is headed and people in that area will have the chance to pick it up and continue its journey.
The promotion will end if the ticket is uncollected or inactive for three separate 24-hour periods.