Iowa State has the drunk bus, I mean
Moonlight Express, weekend bus service run by the campus/city bus system. On Fridays and Saturdays between 10:30 pm and 3:00 am, you can call the bus number and have them pick you up and drop you off at specific locations around Ames. I believe some of the tuition went towards the campus bus system, and in part to this service. Here's more info:
Moonlight Express.
I always thought it was a great service (and it was fun to ride--unless someone had just upchucked all the jagerbombs they did at the previous party. Then, not so fun).