Data: AAA; Chart: Ben Geman/Axios Pain at the pump is easing, but gas is far costlier heading into the summer than last year — and what comes next is wildly unpredictable. Why it matters: High gas prices are the most visible economic effect of the Iran war for many Americans grappling with inflation. Driving the news: The U.S. average price for regular is $4.39 per gallon on Friday, per AAA — down 16 cents over the last week as the U.S. and Iran closed in on a possible deal to extend the ceasef