You probably saw a homemade one. Any type of container would work, although a Coke bottle would be almost pointless due to the limited amount of coolant it could hold.

The recovery tube would have to be inserted so that the end of the tube is all the way at the bottom of the bottle.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)