Leigh Cabot is one of the supporting characters in Christine. She's the popular and most beautiful girl in school and the love interest of Arnie and Dennis. It is a surprise to everyone when she decides to go out with Arnie.
Arnie fixes up Christine over time, and the car becomes his obsession. He starts driving it everywhere and even gets Leigh Cabot to be his girlfriend, much to the dismay of Dennis.
Arnie becomes humorless and arrogant, but also assertive and cruel. Christine is destroyed by Buddy Repperton and his gang who want revenge for Buddy being expelled because Arnie told a teacher that Buddy threatened him with a switchblade.
After Christine's destruction, Arnie angrily blames Leigh for it and fights verbally and even physically with his parents.
Finally, Dennis carves Darnell's Tonight into her hood and waits at Darnell's that night inside a bulldozer.
Christine chases Leigh around the garage while Dennis tries to hotwire the bulldozer. Arnie is thrown from the car when Christine crashes, with a large glass shard sticking out of his stomach.
Arnie dies and Christine goes after them with a vengeance. He hotwires it and destroys Christine before she can rebuild herself. She is fed into a car crusher, which compacts Christine into a cube.
At the end, Dennis and Leigh look over the destroyed wreckage of Christine, as they hear that oldies music playing.
However, it is not Christine, only a boombox. Leigh says that she hates rock and roll as a piece of Christine's fender slowly begins to bend, indicating that she is still alive.