Flight simulator on Google Earth

Try this:

• Open the last version (4.2) of Google Earth (download here)
• Hit Ctrl+Alt+A (or Cmd+Opt+A for Mac users)
• Choose your plane and airport
• Hold Page Up for a few seconds to increase to maximum thrust
• Once necessary speed has been reached use arrow keys to control the airplane
• Up arrow key - go down
• Down arrow key - go up
• Left arrow key - go left
• Right arrow key - go right

That's right: a flight simulator on Google Earth... What will they invent next?

Source: Lifehacker