Google has announced that they are making Google Earth Pro features free to all users. Google Earth Pro adds a number of features and on top of the standard Google Earth desktop setup that allow you to measure 3D buildings, record HD video of your virtual flights, and more. You'll now be able to record your virtual trip to your favorite city absolutely free.
To use Google Earth Pro for free, you can download the desktop app and grab a free key from Google. Enter your user name and license key when you open the app and you'll be good to go. Existing Pro users don't need to do anything, and their license keys will continue to work just fine.