I dunno, more modern cars are actually made better in alot of ways, way better quality control in many cases. multi point fuel injection and electronic ignition have to be one of the best longevity things for vehicles ever. You put the key in and it works, it doesnt run rich or lean its just right always drives 300,000km and asks for more. yes interior plastics are prone to failing but some of that can be 3d printed and often alot more car were made of each model. and really thats still a probelm for older cars too. The skills needed to keep a more modern car running are a bit different, but I dont see it being that big of a barrier in the scheme of things thought. hardly difficult at all compared to some of the rust restorations that get taken on with old cars.