The Nissan Versa was also a reference to the show. There's an episode where Hiro makes a huge deal out of using a Nissan Versa to drive around America,. It was over the top product placement.
I can't say I recall that part, but I definitely have a terrible eye for cars. Is that around the time he meets the girl with perfect memory? Or is it later in the series?
It's when Hiro first arrives in America, he's very excited to rent the Versa, and says Nissan Versa like 3 or 4 times in a row, and it was an absolutely ridiculous instance of blatent advertising. The scene on YouTube.