That's awesome!
I had my choice to drive a Gallardo or F430, chose the Ferrari and it was a great experience. Next time is the Lambo.
However, it was in a controlled environment and I paid. Someone doing this out of the kindness of their heart (I guess?) is pretty damn cool.
Most of the time you see these people and think they're too stuck up to even say, "Hello." to you.
Great story!