80 years ago, Humans crash landed their Colonial ship "Maria" on cold and harsh ice planet, most of Maria got destroyed, but her batteries survived and because of that, humans where able to create a settlement. One day, her batteries started to overheat and got unstable, putting human settlement at risk of going extinct.
Fortunately, fixing it is a huge challenge for settlement, because the knowledge of this technology is almost gone. When it crashed 80 years ago, the ships libraries got destroyed and most engineers and scientists died. Only handful of people kinda understood how stuff functions, one of them was your grandfather, who was apprentice to one of the engineers back when he was young.
He build the Rover, a car, that he put all his technology knowledge he learned in his time, he successfully build a mini power generator, similar of Marias, but not as powerful. He even managed to build a weak teleport for Rover, so it could unflip it self if needed.
After his death, you inherited this Rover and became settlements Explorer, whos job is to explore the harsh environment and search for Marias wreckage that has scattered around after the crash.

Im still writing the lore, its fun, so i will try to finish this summer.