By the time Jason climbed off his bike and walked it over to the rack, he was sweating like crazy and could barely feel his legs. It had taken him nearly an hour to pedal up the hill to the high school — in August heat, no less. But with both his parents at work and no friends who drove, it was the only way to get to his sports physical. He couldn’t wait until next year, when he’d be 16 … old enough to get a permit and start driving himself places. Jason leaned his bike
