The Mars discovery tool Phoenix Lander, which was sent to Mars by NASA in 2007 and started mission in 2008, disappeared in Mars.
The vehicle, which investigated live footprints on Mars and was thought to continue for a longer period than predicted, disappeared after the end of the mission. Space vehicles that do not move on the planet with a fairly dusty and windy atmosphere can be deprived of the resulting solar energy by covering dust. (Which is what it is for Phoenix Lander)
Scientists have voiced that Phoenix Lander is now just a fossil on Mars. However, the car deserves to be mentioned as well as what it has done up to now. (Maybe they will find somebody to go first)
Maybe millions of years later a civilization goes to Mars and finds a vehicle. Interesting science-fiction can come from this story!