A Carinfo.txt is a different type of Parameters.txt, but still share similarities with its descendant. It basicaly groups all cars' data into a single text file, on the contrary of Parameters.txt which there's one for each car. It's usually located in the root directory of a game. Known versions that make use of this type of file are the demos older than the fourth type, Dev and Dreamcast, except that Dreamcast's data writing is more similar to the Parameters.txt. Carinfos also seem to work in a different way of the Parameters.txt, therefore its data cannot be easily converted to other versions.