User Summary An expansion disk for Street Rod which allows the game to be played using a different set of classic cars. The Data Disk replaces the second Street Rod floppy disk, completely replacing the original set of cars with a new collection. Because the Data Disk merely replaces the data for the game's original cars, you cannot race the Street Rod cars against the Data Disk cars. Although advertised as adding 25 cars, it appears that the data disk only offers 23 new cars. These include: 1955 Chevrolet Nomad wagon, 1959 Cadillac Eldorado convertible, 1934 Ford Woodie, 1939 Pontiac two-door coupe and 1948 Chrysler Town & Country convertible.