HELP ME WRITE FANFICTION D; D;?

My little cousin wants me to write some fanfiction about the new pixar movie Cars 2 'cause he loved the movie and he loves how I write stories. When I talked to him the other day, he said, "I wanna see cars die!" How can I possibly make a kid friendly story which still involves death yet stays true to the storyline! He hinted in that the main character should be that one Italian dude whatever his name is -________0