I'm not making this up.
[Twymans's] first pilgrimage to the pump was prompted by fellow volunteers at the First Seventh Day Adventist Church in Petworth, a working-class neighbourhood of the US capital, who were struggling with higher gasoline prices.
He led them down the block to the local Shell gas station to pray. And over the months since then, he has held similar prayer meetings at pumps all over the US.
"We were down in Huntsville, Alabama. We finished praying," Mr Twyman said. "Immediately the owners came out and changed the gas prices. They brought it down. We had marvellous success down in St Louis, Missouri."
Still, they don't believe in prayer without action and have been advocating a change in driving behaviour: "So we've encouraged people to car-pool more and organise their days more, because it's a combination of faith with these other factors."