Global effects acting on the ICMEs dynamics after the driving Lorentz force becomes negligible. The main component of the drag force is denoted as F _d, whereas F _t depicts the force caused by the tension and magnetic pressure gradient resulting from the ambient field deformation. a) ICME faster than the ambient solar wind () with a pile up of mass ahead (light gray). b) ICME slower than the ambient solar wind (v < w) with a pile up of mass behind. East is to the right, west to the left.