NEW YORK -- Biking to work is hard for Americans, even for those who live in a relatively bike-friendly city. On any given commute, you may find yourself pedaling for your life as some motorist obliviously bears down on you. Then there are the ones who tailgate you, honking, as though you're blocking the lane out of malice as opposed to pumping your poor legs as hard as you know how. You arrive at work fatigued and sweat-stained -- not the most auspicious way to start a day.Niko Klansek, a 29-year-old New Yorker and native Slovenian, is not a small man: He came to the United States to play college basketball, and he looks the power-forward part. Still, when he started a smoothie company in New York and tried to get around by bike, he would often arrive at meetings with distributors and suppliers dripping with sweat. "They didn't take me seriously," Klansek says. They assumed he was a bike messenger, not a businessman.