is this a rear view camera?

[the Ferret]

I think it's more likely just one of the "dash cam" type continuous video recording devices they sell for motorcycles now. Some systems have front and rear cameras that connect to a recorder somewhere under the seat. Records front and rear whenever the bike it turned on. Continuous loop recording but you can pull the memory card to review if you get in an accident or want to save some cool footage.

wow that sounds like a neat thing.