Since it was originally conceived in 1979 as a vehicle to be used primarily in tough off-road terrain, the G-Class has undergone an astounding evolution. Over the course of 33 years, Mercedes-Benz has refined what was initially a very practically-oriented off-road specialist by giving it a premium interior and road-going qualities on par with those of the premium sedans from Mercedes-Benz. The G-Class today is considered the top model among luxury-class cross-country vehicles, and has provided the gene pool for other very successful SUVs built under the Mercedes-Benz brand.