"Hank Hill's asian next door neighbor..   Khan...  does he drive a vanagon?"

Program partial description: http://www.imdb.com/title/tt0118375/
"Show about a rigid redneckish propane salesman with a good heart and wacky friends and family."
...ah, propane no less!
Then there's:
http://www.imdb.com/title/tt0763266/
(VC)  "King of the Hill" Westie Side Story (1997)  (yes, "westie") alluding to his new Laotian neighbor.

... that's all the evidence I'm going to try and provide.

bob
not-redneckish but zealous about my rig .... and yours for that matter.