This is a great looking GNR that is set up as a dirt track racer, hence the mud colored tires! It was released as part of a set, and was not available as a single release. 

It is a great cross-collectible with wide appeal, so if you collect Hot Wheels, Race Cars, Buick, GNR’s or Muscle Cars this will be a colorful addition to your collection. (1:64 Scale)