He has a family and a business to run, you know. He can't just drop everything to fly the other end of the world to win at craps with you in Vegas so an internet board can see you win.
Plus Joon doesn't have a house in the first place.
So - how does he show "his" house when he lives in his moms attic.
The challenge just shows how much of a douche he is.
He could still come and race me in LA till Thursday or Chicago Friday/Saturday. Trouble is - showing off mommies house is something that does not require any man-skills, running does.
Perhaps Joons mom could come and run for him? Trouble is - then who would wipe Joons arse for him while she's away?