Darpa made things a little tougher in 2007 when it staged a 60-mile race in an urban environment. Eighty-nine teams entered, and 11 made it to the start. The course included 4 miles of k-rail enclosed “streets” where entrants had to cope with manned-vehicle traffic at the former George Air Force Base. Carnegie Mellon’s team, Tartan Racing, completed the course in a bit more than 4 hours and 10 minutes with a Chevrolet Tahoe it named “Boss”
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