News Physics Charging up fuel injection A new device uses an electric field to increase cars’ gas mileage By Patrick Barry October 3, 2008 at 4:24 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Normal 0 false false false MicrosoftInternetExplorer4 A little voltage can jolt existing cars into getting better gas mileage, new research shows.