1) I hope the kids are okay.  In the end, that’s all that really matter!
2) The driver should have his license revoked. Who runs over a box big enough to hold two children? What if it had a big screen TV in it? Or a riding lawn mower? Not to mention that this dimwit said he didn’t realize the kids were in the box, explaining why he didn’t stop. A couple weeks back, I clipped a dog who ran under my back tire. Trust me. You know when you hit something!
3) The parents should be put in a box and run over. Who lets their 5 and 7 year old play in the street? I don’t let my 4 and 12 year old play in the front yard without adult supervision.

Sadness all around…