There is an endurance run called the TDI Panamericana. A VW Touareg is enroute right now and is near Panama City, Panama. They started at the trip July 2nd at southern-most the tip of Argentina and will finish in Dead Horse Alaska in 14 days. That's about 16,000 miles.
You can track them in real time at http://www.tdi-panamericana.com/