When the convertible is first shown on the episode, the flower on the anntenna is a different flower than the one that is on the anntenna when the car is rescued from Lake Erie.
Lisa: Girls, we know everything.
Tamera: You even know about us driving to Canada?
Tia: Well, they do now!
Tamera: Oh my gosh, Tia, my dad is going to kill us.
Lisa: Yeah, I remember my first lil' car in the show room window. It went a little like "ahhh toot toot, ahhh beep beep."