There's a series called Burger Land. Some of the locations look interesting with quite good looking burgers. They aren't all truck friendly and maybe not even van friendly but here they are anyway. I'll add as I see more.
Chicago
The Billy Goat Tavern.. home of the cheeseborger, the inspiration for the SNL skit.. underneath Michigan Ave.
Kuma's Corner.. northwest from Chicago
Top Notch Burgers with 70 years in business
The Weiner and Still Champion in Evanston.. named by a contest at a middle school.. 38 years in business
Chicago
The Billy Goat Tavern.. home of the cheeseborger, the inspiration for the SNL skit.. underneath Michigan Ave.
Kuma's Corner.. northwest from Chicago
Top Notch Burgers with 70 years in business
The Weiner and Still Champion in Evanston.. named by a contest at a middle school.. 38 years in business