Q: While driving the car lost power and came to a dead stop. Won't start on 1996 Mercedes-Benz C220

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Last week engine turned over but would not start, but then did. Happened again this week and Autoelectrician not MB expert but tested sparking. OK. All lights working, not battery. I read it could be remote batteries getting old and not reading code so followed advice and car started. (Happy!) Then today car just died and came to a halt while driving. Had to tow home. What could this be?
(2) Answers
I just had this problem with a 1999 Ford Taurus. It was the Mass Air Flow Sensor. It ran, then quit. Got it towed home, the next day it started and ran fine. A few days later it died and would not start. Just unplug the MAF and try it. If the sensor is bad, the car will start using the 'default settings'.