A car 🚗 is something with four wheels and a motor that you drive (coche, carro or auto in Spanish), while a cart 🛒 is something you use when you go shopping (carrito). It is also called a trolley or a buggy in some parts of the English-speaking world.

A car is carro, or coche in España. A horse and cart would be used by a farmer to transport goods.

A difference of engine