A childhood belief about cars

I doubt any of you have ever heard about polonez, the Polish car. It was named after famous national dance, but as a child I always associated it with car (of course kids don't know much about dances, but about cars passing their houses many times a day they always do), and at the lesson in second grade (8 yrs old) I found poem in my Polish book about dancing polonez. I had been wondering why do they like to write about car until teacher explained what was the poem about.