What are some vintage cars that have become so rare due to rust that they now fetch high prices on auction sites or similar places?

There are many vintage cars that have become rare due to rust and now fetch high prices on auction sites or similar places. Here are a few examples:

1957 Chevrolet Bel Air: The 1957 Chevrolet Bel Air is a classic American car that is highly sought after by collectors. However, many of these cars have rusted away over time, making them rare and valuable. In particular, the hardtop and convertible models are the most desirable.
1969-1971 Ferrari Daytona: The Ferrari Daytona is a classic Italian sports car that was produced from 1968 to 1973. The 1969-1971 models are the most sought after, but many of these cars have rusted away over time, making them very rare and valuable.
1959 Cadillac Eldorado Biarritz: The 1959 Cadillac Eldorado Biarritz is a classic American car that is highly sought after by collectors. However, many of these cars have rusted away over time, making them rare and valuable. In particular, the convertible models are the most desirable.
1969-1970 Ford Mustang Boss 429: The Ford Mustang Boss 429 is a classic American muscle car that was produced from 1969 to 1970. These cars are rare and valuable, in part due to the fact that many of them were destroyed in racing accidents. However, many of these cars have also rusted away over time, making them even more rare and valuable.
1965-1966 Shelby GT350: The Shelby GT350 is a classic American muscle car that was produced from 1965 to 1970. The 1965-1966 models are the most sought after, but many of these cars have rusted away over time, making them very rare and valuable.
1954-1956 Mercedes-Benz 300SL Gullwing: The Mercedes-Benz 300SL Gullwing is a classic German sports car that was produced from 1954 to 1963. The 1954-1956 models are the most sought after, but many of these cars have rusted away over time, making them very rare and valuable.
1963-1967 Chevrolet Corvette Sting Ray: The Chevrolet Corvette Sting Ray is a classic American sports car that was produced from 1963 to 1967. These cars are highly sought after by collectors, but many of them have rusted away over time, making them very rare and valuable.

Overall, vintage cars that have become rare due to rust are highly valued by collectors because they are difficult to find and restore. As a result, they can fetch high prices on auction sites or similar places.