What do big rigs and hippies have in common?Probably not much. But this year, they both made it out to Burning Man.If you’re unfamiliar with Burning Man, it’s an eight-day festival held each summer in the Black Rock Desert in Nevada. About 40,000 people attended this year’s event, which has become synonymous with self-expression, naked people, illicit drug use, and of course, tripped-out,