Lee Phillips K4USS had a stroke while driving to the Upperville Horse Show, fortunately he had his ham radio w/ APRS in his truck.
Using the ham radio he was able to call friends on the air and his Automatic Packet Reporting System (APRS) provided a signal to track his position on a map
Read the Loudoun Times article at
http://www.loudountimes.com/index.ph..._mans_life111/
Automatic Packet Reporting System (APRS)
http://www.aprs.org/