My son the dare-devil. Matthew brought a toy truck over to an asphalt hill (that leads to a tunnel) ... he gets on the truck, lifts his feet off the ground and goes down the hill ?reel fast?. He had SO much fun, but my mothering (smothering) instincts were being greatly stretched ... I could just picture him getting a rock under the wheel and falling face first on the ground. BUT, they didn't take over and I let him be his adventuous self. Aren't you proud?!