I recently stopped to help a woman in her late model Mercedes. Seems the car just "shut down" at the read light right in the middle of the road. I got in her car and tried it and it would not start. The bad thing, thank goodness for W123's, is that I could not even put the car in neutral to push her out of the road. Wow! I figured that the alarm or high tech key had gone to heck.
The best instance of helping someone was a lady and her kid on their way (full size Surburban) from Hilton Head, SC to Chicago. I changed a tire for her and she gave me a $100 bill
. I'll change them all day long for that
.