In the vampire sequence, the Prius appears prominently. The vampire dad talks about timing the lights at night (around 18 minutes into the show). [ame="http://www.hulu.com/watch/187168/the-simpsons-treehouse-of-horror-xxi"]Hulu - The Simpsons: Treehouse of Horror XXI - Watch the full episode now.@@AMEPARAM@@http://www.hulu.com/embed/ZXOOqWBz4zzFLTYtiTlAbg@@AMEPARAM@@ZXOOqWBz4zzFLTYtiTlAbg[/ame]
haha. I think this is the first instance of a Prius showing up in a Simpsons ep? I haven't been keeping track lately.
Wasn't there the edisode Road to D'ohwhere (season 17, ep 11, 2006), where on the road trip Bart and Homer stop at a diner where they notice another father and son. This father and son were made out to be a perfect pair and I believe the son was called Shakespeare. Well, they use a napkin to wipe their mouths after their burger, much to the amusement of Bart and Homer and then head back to their Prius! again with much mocking from the Simpsons.