When Ken and Vanessa flee from Vegas toward the end of the film, Vanessa is wearing a red and black wetsuit. But during some shots during the chase scene, she appears to be wearing a different outfit. This is noticeable when they're in the quarry. When Ken first stops, she's wearing the second top (which looks kind of like a Starfleet uniform top from Star Trek), but then when she pokes her head up out of the car a few seconds, she's got the wetsuit on again.
The high school teacher congratulates students for studying, claiming most of them ended up on plus side of "bell curve" following recent test; but there is no way a majority of them could wind up either side (plus or minus) because a bell curve is a graphic way of demonstrating the norm (in this case, test scores) in the middle, with upper or lower scores trailing off equally on either side - hence the "bell" designation.
When Ken is chasing the Vette on a bicycle, he hitches boosts in speeds by holding on to various cars along the way. At one point, a construction pickup is one of these "boosts." The driver had to honk and actually slow down for the stuntman on the bike to catch up and grab hold.