Don't be scared. This is only a suggestion, I repeat, only a suggestion.
Do you need a road trip boredom buster? Consider this:
Cookie Magazine reported that helping your child construct a Fruit Loop or Fruity Cheerios necklace using dental floss as string makes for a better traveling partner in the car. The construction of the necklace keeps their hands busy and the munching of the necklace keeps their mouths busy. You can use a pie tin to corral the cereal and string.
I think teenage girls would love this too. It is just another thing for their hands to do besides text messaging.