I would say moving 3 babies should be pretty easy.. Just make sure they have litter box & do resting stops for them to have water & some food.. Now what I have that works great for when I do long distance transports is == get 50 or 100 lb dog carrier.. Thats big enough so all 3 cats can fit pluss the litter & a water & food bowl.. I have a SUV so all fits good..