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 Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to 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.