The latest "Mavericks" version of Mac Calendar problem has a feature that allows you to specify how long it takes to get to appointment, and it shows that on your daily/weekly schedule. Accompanied by a little "car" icon. This bugged me, so I created a replacement icon, and I figured I'd share my little Buddy icon.
To install it, download the file, then go to the Applications folder and right-click on Calendar. Select "Show Package Contents", and go to Contents, then Resources. Copy the file to this location (giving it an admin-level password to authorize overwriting the existing file). Close the Calendar app and restart it, and instead of a little car, all of your travel-time indicators will feature a Buddy-like scooter in profile.
Buddy-icon OS X Calendar hack
Moderator: Modern Buddy Staff