I have to say, why would Robby not try and get the people who handle PR for the Dakar Rally to sponsor atleast 1 Cup Race? Imagine the pubplicity it would bring for them in the US. A race in Oct or Nov, during The Chase. Robby shouldn't have trouble getting Monster, Polaris, possibly Toyo tires, (Not sure if Toyota would allow Hummer on there) but, this could be awesome exposure for Robby, RG Offroad & Dakar.
If anything make a deal that if he promotes the Darkar race in one NASCAR race he gets his entry fee free for one Hummer. Then he could do three races and get all his hummers in for free.
Back where I'm from, there's an awesome place called Pal's Burgers. Best fast food (except for in and out). It's located in the area around Bristol Motor Speedway (Kingsport, Bristol, Johnson City). If anyone goes to the Bristol race, GO TO PALS. Robby, call Big Pal up and see if he'll sponsor you for a Bristol race.
I watched that video of Robby's first Cup race and it got me thinking about Publix. They're everywhere now. Back then they didn't really have them where I live. You think they'd have the cash for a sponsorship. There are three Publix stores within ten minutes of my house. They're about to kill Winn-Dixie who used to sponsor racing. Robby's guys should give Publix a call.