Faster!!

This effect imitates panning with relatively long exposure, but it looks very artificial because of the border between still and blurred parts of the image. Maybe adding some motion blurring to the kid, too, would help to make it more realistic?

And since you've gone so far to modify the image, maybe you'll go even further and recolor the kid's shirt? This blue blends with background, I'd suggest yellow, which matches his cart and makes him stand out from background (yellow is - what do they call it? - advancing color, it looks closer than blue).

For what it's worth, here is a similar shot of mine (without any manipulation) taken at 1/11 of a second exposure.

Link to photo.net photo.

Andrey and Peter thank you both for your suggestions. Andrey I see what you mean about the shirt popping a little better had it been yellow. Peter I liked your "Mad Tea Party" image (manipulation free) I did mimick it just a bit it this 2nd effort. The one thing I just don't want to loose from this image is the smile on the kids face.