Same for me, people always say I must be great at Tetris, I might be good at Tetris, I don't know...never played. I do know however, I happened to have excellent spatial reasoning skills, don't need a map, strong visual memory, etc etc. I suspect other folks good at packing cars are probably strong with spatial reasoning and memory.

Seems there is some research into this - The neural basis of Tetris gameplay: implicating the role of visuospatial processing: https://link.springer.com/article/10.1007/s12144-021-02081-z