(NBC NEWS) -- The Environmental Protection Agency has proposed new rule to make gasoline cleaner and our air safer.
Environmentalists and car companies are hailing it as one of the best thing President Barack Obama has done.
The move by the EPA would impose California's tighter standards on the nation starting in 2017.
It would result in less sulfur in gasoline, lower tailpipe emissions and cleaner air.
Environmentalists claim it would result in $7 dollars in lower health care costs for every dollar spent, and almost zero pain at the pump, just one cent.
"We're looking at a penny a gallon, and we can guarantee the consumers will not discern any impact in cost increases at the pump from this proposal," says S. William Becker of the National Association of Clean Air Agencies.
Oil companies, however, claim the new rule would cost up to nine cents per gallon.
"At the end of the day it's billions of dollars," says American Petroleum Institute economist Rayola Dougher.
Car companies called the Obama move a big step forward. Catalytic converters would work better.
Meanwhile, President Obama was in Miami Friday, promoting a $21 billion dollar plan to sell more bonds to upgrade highways and other infrastructure.
"Building better roads and bridges and schools, that's not a partisan idea," he said.
But, in fact, the Obama move to invest again in highways and to mandate cleaner gasoline does have GOP opposition.
One senior Republican said "we can't afford policies that raise gas prices."