By DANIEL NIEMANN, PAOLA CORONA, JADE LE DELEY and HAU DINH At a gas station near the Cologne, Germany, airport, Bernd Mueller watches the digits quickly climb on the pump: 22 euros ($23), 23 euros, 24 euros. The numbers showing how much gasoline he’s getting rise, too. But much more slowly. Painfully slowly. “I’m getting rid of my car this October, November,” said Mueller, 80. “I’m retired, and then there’s