If manufacturers in general were serious about improving efficiency they'd stop putting huge heavy wheels on everything, instead of chasing fractions of a percent with overcomplicated and failure-prone door handles.
Side bonus, smaller wheels with taller sidewall tires are more comfortable, less prone to damage, and the tires are cheaper and easier to replace, too!
Side bonus, smaller wheels with taller sidewall tires are more comfortable, less prone to damage, and the tires are cheaper and easier to replace, too!