I can't think of a single thing I'd rather F1 engineers doing with their downtime than building grills designed with F1 dynamics in mind.
Former F1 engineers Florian Wagner and Daniel Ernst got together to create these wonderful meat-burning machines. They've got "low profile tires, drop-center rims, centre nuts [and]safety brakes" and the top-of-the-line GTX 1500 looks a smidge roomier than my first car. The smallest grill, the GTC 500, is diminutive enough to pass as a piece of carry-on luggage, and would probably be enough to give your local TSA agent a mild stroke.
Brennwagen's site isn't super-clear about the prices, but they do offer this lovely illustration of how they think trucks deliver will the grills.