Ford Thunderbirds. Lovely aren't they. The way the rear seats fold when the top's down, so that there's a continuous line from the front seats down to the trunk, is being hailed as a modern design innovation by several manufacturers now. Ford were doing it 60 years ago.
Billy Gibbons owns a custom version, called Mexican Blackbird, (after one of ZZ Top's hits), & painted to match his guitar.
.....and here's a you-tube clip...............
http://www.youtube.com/watch?v=sNI0W3zjEFA&feature=related