What to do on long car ride?

Okay here's the deal: my mom and dad are driving from Plymouth Machusetts to Niagra Falls. What a car ride! so, what are some things i can do to p the time? I dont have a PSP but my brother does; he wont let me use it. I have an MP3 player, but i think it will be boring. What can i do? Thanks ahead of time!