Since you're a FOSS fag, note that computers in an older car are very simple and as long as the firmware cannot be flashed for these computers, It is considered by RMS okay. But you might have to some research on whether or not there's a equivalent replacement to flash the firmware and is free as in freedumb, but modern cars are a complete nightmare to repair and also against your muh freedom idealogy. So might as well dock modern cars off your list.
Here's a few ideas you can actually do
>import a nip car, due to retarded japan regulations about pollution, you can import cool Japanese cars with very low mileage, the wheel is on the right side unlike american cars, etc.
<you have to fucking import it, the car weighs like a lot of kilos and has to be shipped on a ship and everything, you still need to learn how to maintain it and in rare circumstances repair it
>get an aussie muscle car, can't get any better than that
<as of right now, it's pretty much mad max, v8s and v6s are all taken up and very expensive and collectable and will require knowledge to repair and maintain on much older vehicles
>get used cars in your local state/area
<a fucking gamble without very good knowledge & research, must have knowledge on how to repair and maintain cars
The Australian dollar isn't strong but it's not that bad as a hellhole it is when it comes to selecting a variety of cars.
Some cars have terrible automatic tranmissions but reliable manual transmissions, so be even more wary and do some research.