Do you think my program will work?

pro3000:
So to turn left I should write myservo.write(179); ?

And to turn right I should write myservo.write(-179); 

Should put a delay after those commands and set myservo.write(0); to go straight than?

And the motor is a 6V motor from a car my teacher bought in a supermarket... It's a RC car. It has two wires.

To turn the servo (and I assume the steering) one way

 myservo.write(170);

and the other way

 myservo.write(0);

and straight between the two

 myservo.write(90);

What is there between the Arduino and the car ?