I think what happened was terrible, and there is really no excuse for that babys death, but this young man (I think he's 21) is ADD and I can imagine that he absolutely, positively did not remember that the baby was with him.
He is devestated, as is his young wife and both of their families. There have been a number of babies left in cars in the Bay Area, and this will be the first one that has been prosecuted.
May sound crazy, but I'm wondering if the DA is going after him because he is white and his wife is Oriental. Or, maybe, this is just a DA looking for a conviction.