I agree with the previous answer, but I do have something important to add.
You asked this question because you wanted to know how to hatch eggs quickly, correct?
Well, not only do your eggs hatch quickly by riding repeatedly around Prism Tower in Lumiose, but you can hatch eggs in half the time by getting a Pokémon with Flame Body or Magma Armor. My suggestion would be to get a Volcarona or Talonflame. (The latter is easiest because Fletchlings are very common.) These Pokémon both have the Flame Body ability and can learn Fly, so you can go from Camphrier Town to Lumiose City to Kiloude City to check IVs.