You don't have to be connected to the Internet to calculate how much you can save on gas by switching to a fuel-efficient vehicle ... just fire up the MPGoMatic Dashboard Widget and you'll be set ...

DOWNLOAD THE MPGOMATIC APPLE DASHBOARD WIDGET

Release Notes: Mac OS X 10.4 Tiger is required.

If you're using Safari, click the download link. When the widget download is complete, Show Dashboard, click the Plus sign to display the Widget Bar and click the widget's icon in the Widget Bar to open it.

If you're using a browser other than Safari, click the download link. When the widget download is complete, unarchive it and place it in /Library/Widgets/ in your home folder. Show Dashboard, click the Plus sign to display the Widget Bar and click the widget's icon in the Widget Bar to open it.