I caught a segment in passing of a woman who almost died in a car crash but wound up being saved by a truck driver who was revealed to be a former EMT and that they met up some years later but that was the extent of the update. I was wondering if any other information from the update is known.

Unfortunately, that's the only information I can find as well.
http://unsolvedmysteries.wikia.com/wiki/Savior_of_Wilma_Drew