> Why cars don't get as cheap as laptops do.
Because they are way more complex and use much more material? Here, you get a tiny new car for 14 k€ (and if you want e.g. a station wagon with some nice features, you can easily pay two or three times that price), while you can get a used, road-legal car for approx. 1000 €, but it doesn't get much cheaper than that.
A car consists of quite a bit of metal, so even if it is defunct as a car, you can still remove the still working parts and sell the rest as scrap metal and earn some money. This sets a lower floor on the price.
And about upkeep, yes that is expensive everywhere. When my parents sold the station wagon, I was curious how expensive a car would be for me and found that that particular one would have cost me 100 € per month for insurance alone, my dad said that a small car costs roughly 300 € per month (though that also included fuel, repairs and deprecation). A fellow student paid something like 250 € per month for his car -- "Still cheaper than moving to the city," he said.
Laptops consist of so little material that that avenue doesn't really make sense, I guess -- I don't know prices for scrap metal. Also, there is no safety test that makes your laptop illegal to use when it fails, so you can keep it working longer. And there is much less wear and tear, less rain, less corrosion and so on, so it needs less care than a car.