perfectly. >> in february of 2006, robert huffman was tried and convicted of failure to stop and render aid after an accident. because of his previous drunk driving offenses, he was sentenced to the maximum, 20 years in prison. >> he never confessed, never showed any remorse, and was rather indignant about the fact that he was being tried for this offense. >> investigators say that without the science, this case, like most hit-and-run accidents, would probably have gone unsolved. >> to be able to establish a physical match is a rare find. to be able to actually solve a case and to obtain a conviction is even rarer. >> it just, to me, shows the determination of law enforcement to leave no stone unturned and to really look at the scene, and they did a great job, obviously, of evidence collection in this case, and it really, really helped this case along.