Well, he *is* two now, after all. Going for a walk can mean exactly that: walking. Not pushing a baby stroller, or carrying a baby. Actual bipedal movement.
Don’t get me wrong. He still wants to be carried sometimes, or pushed along in a stroller or trike. But he doesn’t need to be. Now he can walk, run and jump along.
And with such freedom comes added responsibilities – for his parents. Now we need to start emphasizing the need to stay on the side-walk and not running into the street. Oh, and don’t step in that little pile of dog poop. This is, I think, good advice for any age.