Thanks to copious incentives, the Labor Day boost and the recovery following the recent hurricanes, auto sales were higher all around in September. Detroit's Big Three had a fairly strong month, with evenFiat Chrysler Automobiles NV FCAU reporting a small increase in its retail sales, which accounted for 84 percent of the total sales. This followed a decent August, which saw a modest recovery after a seven-month lean run. September had one more selling day in 2017 than in 2016. SourceThere is a breakout of the rising wedge, so downside is possible. $FCAU, Fiat Chrysler Automobiles N.V. / D