questionedithistorytranslationsWhere is the headquarters of OPEC?in Riyadh1057in Dubai2507in Caracas1299in Vienna4465OPEC was created in 1960 with headquarters in Geneva, Switzerland. It moved to Vienna, Austria in 1965.Share and bring new players to the game!correct this questionglobalquiz.orgreach: rather globalAustriaoilorganisationspoliticsIllustration: Pufferfish DisplaysPolitics quizWhich two European capitals are the closest to each other?Vienna and Bratislava. Bratislava is only 60 kilometers (37.3 mi) from the Austrian capital Vienna. Before the Second World War, there was a regular fast tram service between the two.What did Niki Lauda do after the end of a career in F-1?He ran his own airline. Lauda Air Luftfahrt GmbH, branded as Lauda Air, was an Austrian charter airline based in Vienna, which was founded by Niki Lauda. In 1999 he sold his shares and the company merged with Austrian Airlines. At the end of 2003 he launched a second, competitive airline Niki.What is Serfaus known for?It is the smallest city with an active metro. Serfaus is a municipality in the district of Landeck in the Austrian state of Tyrol. Serfaus is also known for its small hovertrain subway system, the Dorfbahn Serfaus. With four stations and a length of 1280 m (the second-shortest underground train line in the world) it allows for a complete ban of cars within the town, while at the same time maintaining the village's attractiveness to tourists, particularly skiers. What kind of crude oil is better? (more expensive)Sweet crude oil contains small amounts of hydrogen sulfide (in contrast to sour crude oil). Low-sulfur crude oil is in high demand as it is used to produce high-quality gasoline without the need for expensive processes of removing sulfur impurities. The term "sweet" originates from the fact that a low level of sulfur provides the oil with a mildly sweet taste and pleasant smell. Nineteenth century prospectors would taste and smell small quantities of oil to determine its quality.