Uno doesn't like cars, why would her Master want to ride in that when she can just TRANSFORM so he and Pauline can ride on HER.
One of Uno many powers is shapeshift, here she being a bit lazy as she could easily change her color into something more fitting to a real giant Rat-taur but she in a playful mood at the moment. Path is at his normal 3 feet tall so this picture has a whole alot of big in it.
Pauline like it because she get to stay big, not have to worry about driving and just relax......Looks like Uno making some headway into winning the mouse over totally.

My characters and ideas  Newtypex

His artwork and coloring  FoxFencer