The "forever car" - does it exist?

So I was browsing local classifieds as is normal when bored and started wondering, is there actually such a car as a "forever car"

What do i mean by this? Simply, a car you can buy at a young age (say 16-25) and have it run reliably, comfortably, enjoyable and cheap.
Then be able to start modifying/altering the car for maybe less reliability or comfort but a much more enjoyable ride without spending ridiculous money when you're able to afford a decent daily, without ever feeling the need/necessity to sell the car.

So what I come to you today with is a question - what would you pick as your "forever" car?

Pic - moog's forever car

W123 Benz diesel

volkswagen beetle

not to be confused with the new beetle

...

This is my "forever car," even though that name is pretty gay. I Dr myself upgrading it and enjoying it for as long as I can.

My e30

As long as I can buy a timing belt

ae86/aw11

I wonder how many miles a chassis can go before it turns to shit, assuming you replace the engine and tranny.

I already have it

At some point every car that lasts that long is a Theseus ship.