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Victor goes back to Facebook and sees these messages in his inbox and is relieved that he has a place to stay in Atlanta. He responds back thanking everyone and opens up Road Trippit. He then finalizes the trip by solidifying the people he is staying with: Maggie in D.C., Stan in Nashville, Mark in New Orleans, and Alexa in Atlanta. He is all set to go!
The day before his trip, Victor downloads and prints off the directions from Road Trippit as well as exporting them to his GPS on his smartphone. He hops in the car and heads to D.C. for his trip.
Designs
Design 1: 
1) Home page. Victor logins with his facebook account.
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2) Welcome page for first time users. Suggests how to get started and has a preloaded example of how to plan a trip.
3) List of trips that the user is planning. The user creates a new trip by entering the name and pressing the ‘create new’ button. Victor creates a ‘Spring Break 2011’ trip.
4) Victor’s new trip is added to his list of trips.
5) Here, Victor enters the starting and ending locations of his trip along with their dates.
6) Victor now adds intermediate stops that he wants to be sure to stop at or at least close to on his trip. He enters the location along with the desired dates and desired hosts. Victor can get a list of suggested hosts if he wants to by clicking on the ‘suggested hosts’ button. Victor adds a new stop by clicking the ‘add’ button
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This design has good error prevention. Each field that the user fills in (locations, hosts, dates, etc.) will give suggested completions. Fields will be checked and only accepted if they make sense (real locations, hosts and a timeline that makes sense). Also, every action that user makes can be undone, whether that includes changing locations, changing hosts, or changing dates. The user will be alerted if the change is inconsistent with the rest of the trip that is planned.
Design 2:
(1) This design starts with a login. Victor would login by pressing the "Login with Facebook" button. This page doesn't have much except a login button which is very simple and learnable. Not much about efficiency or error prevention.
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