Apart from getting a young lady to drive a few kms along a section of beach, placing scale models of our Solar System's Sun and planets at scale distances, he went on to say that if you were in a (don't look Ben) 737, it would take 67 years to fly across the diameter of our Sun. If that wasn't enough, Betelgeuse in Orion, is larger, and IIRC would take 100 years in a 737 to get from the centre of B to the outside.
EDIT: SEE CORRECTION BELOW.













