Due to the nature of the business, the Automotive Sector is highly-target by hackers.
Unlike a typical business-to-business (B2B) only sector, most people buying or financing a motor vehicle will be consumers. Typically, commercial transactions have been via bank transfers or similar, which through email-spoofing techniques is highly susceptible to interception and fraud.
More frequently now, governing bodies (e.g. the Information Commissioners Office) will hold the Dealership or Franchise responsible in situations of data or commercial loss.