NWL - I agree. If the word "beer" was in the text line Bing censored the entire line. I don't have any pictures of the censored Pabst or Budweiser cars but when you find them what you will see
Pabst Car
for the Pabst car the line "The Beer of Quality" is blanked out
Budweiser Car
and for the Budweiser car the line "King of all bottled beers" is blanked out.
My guess is from a production standpoint it was probably easier to cross out an entire line than try to line up a censor print to target a single word.