Mario & Sonic Guy
Old rivalries live on!
Mario Kart 8's in-game manual (the manual that you can view on the Wii U itself) actually does state that the directional pad can be used for movement.Actually in MK8 instruction Booklet , the D-Pad isn't listed as an option for movement , HOWEVER you can actually use it to move in the game instead of the analog stick. So maybe is like that ; it's just not listed there.