As I have said many times the boys here face a wide range of hurdles in learning to read and write. One of the easily fixable ones is having school books with many errors. Here is one example:
My co-teacher Amanda and I gave the book authors and editors every chance to be correct. The word car is not made plural by adding "es," and neither is auto, automobile, vehicle, thing, moving thing, or transportation device. It isn't made plural by adding an es in French either (la voiture). Aha, wait, they must have meant automobile in Spanish: automóvil to automóviles. Glad we figured that out!
By the way, the item after the car isn't made plural by adding "es" either.