The sign out front says service center, but the look inside says mission control. Thick protective gloves? Go. Frosted pipes? Go. Awesome jet of high pressure gas? Go.

Taxpayers, we are go for savings.

Kellyville Police Chief Bill McWhirt's black Charger is getting four tires full of nitrogen.

"Anything that we can do to increase our fuel mileage. He called me about 9:20 and I was here about 9:40," he says.

Mike Griffin with Southpointe Chrysler Jeep Dodge is offering law enforcement a free swap of gasses because nitrogen purportedly increases gas mileage by 3-5 percent.

With over 600 cruisers in the fleet, the savings could add up to tens of thousands of dollars. The city is considering an official switch for all its vehicles.

"We're over about $3,000 in our fuel budget this year," McWhirt says.

The dealership is also offering nitrogen to the Oklahoma Highway Patrol, the Tulsa County Sheriffs Office, and any other law enforcement agency that wants it.

The dealership normally charges $39.95 for the nitrogen swap. They say the gas can also extend the life of tires by 25 percent.

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