Can I upgrade the wheels on the Vyo͞o4 from the EVA wheels? Does the Vyo͞o4 come with a snack tray? Does the Vyo͞o4 come with seats? Does the Vyo͞o4 contain any PFAS chemicals/ flame retardants? Does the Vyo͞o4 have a footwell? Does the Vyo͞o4 have all terrain wheels? Is the Vyo͞o4 JPMA Certified? What age is the Vyo͞o4 recommended for? What are the difference between the Vyo͞o4 and the XC+? What is the difference in the canopy system of the Vyo͞o4 and the XC series?