And basically reliable things as well .. my two have a combined age of 63 years & still going strong.
Will be a different story for the disposable items, sorry cars, produced today. Legislation will likely kill the old 'uns long before they die naturally
You can keep a horse and cart on the road indefinitely too - just need to replace the horse whenever it dies, and replace bits of cart as required. However, whether you'd want to use one for day-to-day transport, is a different story. We can all get misty-eyed about how "they'll never make them like the used to", but the reality is very different for most people. 10 years / 100,000 miles was a good innings for a car in the '70s. Hell, it was unusual to get more than 12,000 miles or a year's warranty!
I have a 35 year old car, which I'm very fond of, but I'm under no illusions about "saving the planet" with it. It's absolutely filthy, emissions-wise, and by today's standards, about as crashworthy as a wet cardboard box.
