The Mustang Effect (or that's what I call it)

If you have a really hugely successful model one year (like the first Mustang), will people from then on be loyal to that model even if it slips a bit? (the Mustang II for example)
Alternatively, if you have a successful car from the past (like the Camaro or the Fiat 500) and you decide to build a new car with the same name, will nostalgia-seekers go after it?
Alternatively, if you have a successful car from the past (like the Camaro or the Fiat 500) and you decide to build a new car with the same name, will nostalgia-seekers go after it?