One key component of GDP is corporate investment in equipment and 2018 should be good.  The combination of tax cuts, improved business confidence, strengthening global demand, high enough oil prices, a weaker US dollar, very low unemployment, and concomitantly rising worker wages, all point to strong growth.  Corporate investment in plant should be close to 7.0% in 2018, up from 4.8% last year and -3.4% in 2016.