Wow! im surprised i had not found that. That's exactly what i was looking for. And that passed right over my head that i didn't need a servo for steering. Thanks for both comments, i appericiate it! 
EDIT: i just got an idea that i could control it with my phone via bluetooth. There is a bluetooth arduino, but there is a rumor that a blutooth shield is in the making. Does anyone know about this because i am not really interested in buying yet another arduino as well as everything else for this project.