We're just starting to look at different size riders for the Morph Out design. The 3D model below shows two rider sizes, 5'2" and 6'2", in low and high rider positions. Notice, for example, the position of the feet relative to the front wheel, and of the hands relative to the pedals. The bike is set for the larger rider.
The Solidworks e-Drawings file lets you see this vehicle in 3D, and also choose the configuration you wish to view (lower left of display). Get the free e-Drawings viewer here, and try it out!