Let the grammar games begin with this crowdsourced search for a plural word to describe the new line of Toyota Prius hybrid cars. 'Prius goes Plural' launched at the 2011 Detroit Motor show, along with a website asking the public to help the automaker decide what the plural of Prius really is.
With options including Prii, Prien and Prium, consumers are invited to vote for their grammatically correct choice. Check out the video above, which explains Toyota's conundrum. The tallied results of the Toyota Prius Plural campaign will be unveiled at the Chicago Auto Show on Feb. 20, 2011.