Department of Transportation Secretary Pete Buttigieg said Monday that people should try to save money by purchasing electric vehicles (EVs) as gas prices surge across the country.

“Clean transportation can bring significant cost savings for the American people as well,” Buttigieg said at the “Accelerating Clean Transportation” event. “Last month, we announced a $5 billion investment to build a nationwide electric vehicle charging network for the people from rural to suburban to urban communities can all benefit from the gas savings of driving an EV.”

The national average gas price exceeded $4 per gallon Saturday, spiking from an average of $2.76 a year ago.