Editor's Note: This content was originally published on Benzinga.com by The ETF Professor Benzinga Staff Writer. Coming off a year in which US automobile sales climbed 13% sales are expected to rise again in 2013 as the US and global economies recover. More fuel-efficient vehicles and fresher styles are among the catalysts that some analysts see as driving robust auto sales this year. "Our fundamental outlook for automobile manufacturers is positive " said S&P Capital IQ in a research note. "We see US automotive demand trending higher on a year-over-year basis. Sales should benefit from widespread availability of and ...