The "wear" from stop and starting engines is due to the lack of OIL on in the engine it first starts... given the fact that most of the stop and starting are going to be short term (stop light) the engine should be well lubricated from the oil last pumped through it still.
In the longer term, say a traffic jam, turning your car off rather than idling it while sitting still in the heat if you are going to be there for 10 or 20 or more minutes is better to do anyway.
"In the longer term, say a traffic jam, turning your car off rather than idling it while sitting still in the heat if you are going to be there for 10 or 20 or more minutes is better to do anyway."
Use not recomended for the French elderly.
I guess I'll just have to give them the benefit of the doubt.