From what we can gather from the translation, it looks like the stuntman was wearing a wig to look like Alice and long red gloves up to his elbows.
You can view a video of the Porsche in action on their website.
They also report that there was a helicopter flying low around the city, but as the fountain has not yet been completed they are assuming that they are filming for the special features on the DVD.
Very exciting to see the Italy scenes take shape!
