Board Thread:Game Discussion/@comment-2A02:810D:1C00:ED2:573:EFD2:D0AD:267A-20180703121005/@comment-35320902-20180703122147

That is a exhibition completion reward. Everything is mentioned clearly in the blog. "In Motorsports, cars are loaned for all events within the Exhibition Series, this means you can complete Exhibition Series content without owning any of the cars"