This track inspection automobile was originally built from a regular production 1939 Buick Century car. In 1947 this vehicle was converted to a track inspection railcar as seen here. As written on the information board at Exporail "the original chassis was replaced by a customized frame that includes an autonomous turntable, two railway axles, and flanged wheels. The original spring suspension was replaced by an elliptic spring system, and an air brake system and a compressor were added to the vehicle." This is one of the more unique railcars ever built and is now preserved in a museum in Canada.