Whats wrong saying Mother Fucker?

So today I was driving roughly 70km/j near Piasau area. I passed the fuel station and beside the fuel station was a Nissan showroom. The Nissan showroom is promoting their new pick-up truck, Nissan Navara. Therefore, they (the Nissan people) put up a banner to promote the new vehicle. As I passed by, I had a glimpse of the banner and saw the word Mother Fucker. So I was wondering and did not gave it a second thought. On the way home, I passed the showroom once again and took the opportunity to once again look at that seemingly descent banner. Soon after, I finally realized that the words on the banner are written "Mother Trucker" ...

Like, what was I thinking =="?!?!? Oh well, people makes mistakes. I mean look at the picture, isn't that obvious that people will mistaken "Mother Trucker" for Mother Fucker?!? Can't they come out with a better catch phrase like, "The Truck's Mum" or something =="?? Sheesh~