Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.
Answers the question, "is this a vehicle for which Carfax maintains data?" The rules are 17 digit vin and 1980 and newer.
/** * get_fuel_economy_member * * Makes retrieving a fuel economy data point from metadata easier.