I have a Grande Punto 60 reg. Evo driving home from shopping today, I stopped at some traffic lights, the stopstart cut in, but when I attempted to move off, absolutely nothing. All the dash lights came on but the key did nothing, not even a click from the starter. I tried a number of times without success and eventually called my breakdown. As it was near traffic lights the Police came out to help traffic flow. We chatted for some time, I got cold so got back in the car, turned the key and it started and has been fine since. Police followed me home to make sure I was O.K. having cancelled breakdown . Any suggestions as to possible fault ?