In connection with the expansion of the line of cars of the Prius model (in addition to the original Prius hybrid, its Prius V and Prius C versions are now available to customers), Toyota wondered: how to officially call these cars in the plural. Combining business with pleasure, where the pleasant was in a high-profile advertising campaign, and the useful in ... a high-profile advertising campaign, the company announced the possibility for anyone to vote online for their favorite name.

The Prii option was chosen by popular vote. This is how you can now safely call the entire line of Priuses or just a few Priuses, if you suddenly see them nearby. Also, using this word, buyers can now express their opinion about all the Prius at the same time.
The Prii variant won with 25% votes. The winner's competitors were the following options: Priuses - 20%, Prien - 19%, Prium - 13%.