When writer-actor John Leguizamo shows up to do a show in New York, fans outside the theater are surprised to see him ride up on a bicycle. “People go, 'Hey, John, I thought you'd be in a limo.' “This is my limo, my green limo. I'm saving the planet for your kids and your grandkids,” says the performer, who has starred in award-winning one-man shows on Broadway and appeared in dozens of films and TV shows. Biking gets you places faster, reduces your carbon footprint, lowers noise, makes you fit and lowers your stress level — unless you get impaled on the door of a suddenly opened cab or cut off by a guy from New Jersey.