Much of the information about Preston Tucker was gathered by Francis Ford Coppola and came from the U.S. Securities and Exchange Commission. It took Coppola several years, using the Freedom of Information Act, to finally obtain access to the SEC's detailed files about Tucker.
Four Tucker replicas on 1974 Ford chassis were constructed for the film. One of these, in Tucker-trademark Waltz Blue, has been donated to the Ypsilanti (MI) Automotive History Collection by relatives of Preston Tucker.
The former Dodge plant in Chicago was as big as stated (now Ford City Shopping Center).
Sofia Coppola: the director's daughter as one of the girls with Tucker on a party during the advertising campaign.