The fuel tank was installed in the spare tire compartment, with the spare tire installed vertically on the left side of the trunk or cargo area. (en.wikipedia.org)
The gluteus medius and gluteus minimus of the standing leg must work very strongly in this variation, because lifting your other leg so far out to the side gives its weight tremendous leverage to pull that whole side of the trunk down. (yogajournal.com)
2) Imagine that the right half of your body is a cylinder, from the right foot up through the right side of the trunk and up through the right arm. (stackyourbones.com)