NASCAR VIDEO: Johnson competes in one last race on 'Late Show'

David Letterman is greatly missed on late night television - especially by the racing community that enjoyed the annual visit by the Indy 500 champion to the Ed Sullivan Theater set.

So it was great to see "The Late Show" bring seven-time Sprint Cup champion Jimmie Johnson on for a visit - though he had to work for it.

For Johnson's full interview with Stephen Colbert, click here.