6. 1968 Custom Volkswagen without Sunroof
The '68 Custom VW was a part of the "Original 16" Hot Wheels collection that Mattel released. But, it looked much different than this one that was produced in Hong Kong at the same time. Intended for release exclusively in Europe, it didn't feature a sunroof like the U.S. version, and it came in a range of different colors, including blue, aqua, copper, red, and orange. One of these can sell for a couple thousand dollars today.