More than half of all the automobile models sold in the United States in 2009 will offer at least optional iPod support, according to a new iSuppli report. The report states that 39 percent of models sold in 2008 offer iPod integration; that number will jump to 58 percent next year, marking the first time availability of an iPod option will be available in more than half of models. The report goes on to state that one-third of 2009 models will offer…