Surely there's less chance if popularity increases and more people want to save them? As is the case with old Fords, increased popularity leads to increased prices and, while that may be a bad thing for someone wanting to pick up a good honest project at an affordable price, it means they're less likely to be snaffled by the banger boys on the cheap. Hopefully they'll then stick to cheaper modern tat that, rather than being rare like a nice old Granny, is easier to pick up than a questionable rash.