anything further?!
I found this link that has a little bit of info on the story. The story says that one dog died and the other two were taken to a shelter. This makes me believe that the driver kept going.
http://www.washingtonpost.com/wp-dyn/articles/A41406-2004May19.html
Last night I thought they had reported that the dogs had been thrown out of the car.
http://www.nbc4.com/news/3322793/detail.html