Friday, August 29 – Wien Next day on Friday, August 29 we had only one item on our to-do list. We wanted to buy special local treat for our coworkers back in Boston. We easily accomplished this in a local supermarket for 2.89€ per one bag of Mozart Balls. In the airport the same bag sold for 12€. Car return was painless. We drove 1,558.7 km in 11 days. Car rental turned out to be the most expensive item on our itinerary (over a $1000), since air travel was almost free. In Paris we had a layover and had to go through a security check one more time. We had to…