The car that is helping redefine an auto maker - Hyundai Genesis - is quickly becoming one of the more popular vehicles in the Korean company's line up. A new variant has been enhanced to include the special 5.0 liter R-Spec engine. This upgrade kicks the Genesis into high gear, and Motor Trend took it for a drive.

According to Motor Trend's test run: "It gives the standard Genesis much-needed injections of athleticism and…