Gas saver? Pot makes gas gauge read half full A Utah man took his newly acquired used SUV to a mechanic to find out why the gas gauge always read half-full. The mechanic in Sandy looked inside the gas tank and found about 35 pounds of marijuana in plastic-wrap packages that filled about half of the tank's volume. http://www.google.com/hostednews/ap/article/ALeqM5jTcGlyPRYujq1ezo7Jb2OM7RGVYAD96E30S80