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Pros of Design #4: Design 4 provides the user with a very interactive and intuitive interface that allows for adding trips and conducting searches with very little typing and effort. The results are also shown in an a fresh style that lets the user see specific timing and distance details. The system is very efficient once users learn it because data can be quickly entered with just the mouse. This design is also safe, it allows the user to change any of the inputted data, though the user may have to navigate through a few pages to do so.
Cons of Design #4: The design may be initially confusing to some users because of the lack of instructions and the dependency on a user's prior experience with Google Map-style apps. Also, while the results are displayed in a new fashion, users tend to have a hard time to read graphs and process large amounts of data at once. Learnability would be the largest issue with this type of design.