In our area I recently saw them promoting literature printed in Chinese (Mandarin). There was nothing displayed on the cart printed in English.
I checked the most recent census data - in this area a grand total of 0.1% of the population speak Mandarin as their first language.
We get some Chinese tourists but they are generally herded on and off buses together in groups.
So they are effectively excluding 99.9% of the population from their cart message.
I mean - seriously - why wouldn't they display primarily in English (the first language of more than 95% of locals) and supplement with some other languages?