M-234
Keep on sale, and Off sale
Your stock stays on sale until you mark it sold or withdraw it. Where a vehicle does carry an end date, its row reads Comes off sale on that date, with Keep on sale beside it, and a note reaches you a few days before.
If the date passes, the row reads Off sale and buyers no longer see it; press Put back on sale and it returns. Either button clears the end date.
The other words on a row: Draft, For sale, Sold, Withdrawn, and Removed, which means Truckaurbus took it down; write to support if you think that was wrong.