The cars on this list are automotive icons. Yet though they've always inspired love in hardcore fans, many of these legendary machines have been ignored by industry experts, car collectors, and auction houses, who turned their attention to trendier and more valuable machines. That's coming to an end. Here are ten cars and trucks that could once be bought for bargain money and are now big bucks. Click the Link to Read More: 10 Undervalued Retro Cars Suddenly Skyrocketing in Value. Ben Stewart for Popular Mechanics.