That graphic is very subtly misleading.
Taking the given lengths as truth (I looked up the F-250's dimensions, and it's close enough): 6.36m/3.947m = 1.6x longer
As a crude check, I held a ruler up to the graphic and measured the Miata bumper to bumper: 5.3"
5.3" x 1.6 = 8.5" the predicted length of the F-250 by comparison.
I measured the F-250: 9" b2b.
The scale is faked ever so slightly, but enough to significantly exaggerate the truck's already ridiculous size even moreso.