Saab 99 Limousine, 1976. A one-off extended 99 4-door sedan built for the visit to the United States in April 1976 by Swedish King Carl XVI Gustaf. The vehicle was painted in Swedish royal blue.
start with sitting upright and shoulders pulled back
gently let head fall backwards, holding it there
slowly move your head along your shoulders; hold where you feel a stretch
keep your head as the main weight and drop it over towards the front of your body
slowly move your head along your chest; hold where you feel a stretch
go back and forth a few times all around, perhaps using your hand to gently pull your head further (if you do this, i find it feels best to use the arm in the direction you're going, so head sits in elbow)
gently and slowly return to the upright position
if you're like me, getting excited and whipping your head to point of dizzy, it's alright to not move until you've recovered