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.
In the beginning of the movie, the emblem that falls to the ground and gets Kenny's attention says "Corvette" - this is a script from a 1963-1967 Corvette Sting Ray rear deck. It should say "Stingray" if it had fallen off a 1973 Corvette Stingray.
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.