Coming in hot. >> Learning to ride a bicycle is a childhood right of passage. One that requires a helmet, balance, and the guts to just go for it.>> Bike lane. >> No. >> In Littleton, Colorado, there's also now a safe place to practice.>> I had my first time riding a bike. >> This was your first time. >> Yes.>> How did you feel. >> I really loved it. This new practice park has all the bells and whistles of the real streets, but without the cars.>> We've got a crosswalk here, and we have protected bike lanes ...