HOW Far would you go???

Man walks from Calif. to NYC to drop pounds - Today - MSNBC.com After reading the article I couldn't figure out if this guy was insane, or this guy was just proving a point. The last few weeks, I have been wearing a pedometer myself. Its a little device that tells me how far I have gone in miles and in steps. Some days its better then others. But I wonder how far would you go??? In suburbia we don't walk as much as we would do if we had no cars and had to take public transportation. I at times wonder if suburban sprawl is the real cause of obesity??