The kid likely wasn't aware that he doesn't need to go anywhere but the street in general. I was able to catch one from a block away on a parallel street. The official "radius" for the pokemon's target is 40 meters, but in practice it seems to be more like 20, which is still plenty of room. If you see him again, just let him know he'll still catch whatever he's after if he stays on the sidewalk.
[doublepost=1468250004][/doublepost]
The point of the game is to go out and walk. No one owes you something just because you want to cheat and drive around to be "faster." The characters in the game and show didn't ride around on a bus. They walked from town to town and saw the world. If that's too much to handle, play something else.