Boomerang II ??

Originally posted by Hotschi48: As you say firebat, this bug appears quite frequently, usually it's a hint that a vehicle pops up for a sale soon - and Australia Day is on the 26th January.... food for thought, the suspense is killing me...

Hi! This generally occurs when we update the game to include a new vehicle or event for a limited time but the start time for the vehicle to show and be on sale hasn't begun yet. In this case it was for Australia Day, the vehicles can be seen here:

https://steamcommunity.com/games/236390/announcements/detail/530962536730722953