“During this part of the car tutorial we will focus on the front bumper and adding all the details. To do this we will go over 5 tools: Offset Surface, Loft, Trim, Untrimmed, Round Tool, and Circular Fillet. The LFT (Loft, Fillet, Trim) process will be very repetitive and as the tutorial progresses you will become more efficient with the process.”
http://www.3dtotal.com/team/Tutorials/julian_sarmiento_carmod/carmodel_part2comp_01.php