Items that had to be ordered..

A few things that are need...

The motor driver will allow me to connect two motors to the raspberry pi and will enable me to control them.
One motor for forwards and backwards and the other for left and right.

L298N Dual H Bridge Stepper Motor Driver Controller Board Module Raspberry Pi
http://www.ebay.co.uk/itm/131065653661?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Attaching the camera below to the top of the car will allow the users to see where they are driving the car.

RASPBERRY Pi Camera Board - The Very Latest!
http://www.ebay.co.uk/itm/200942200273?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Basic connectors so that I can practice creating the circuit before i solder the components to a board.

MALE to FEMALE 40way 20cm Jumper Wire Cable Breadboard Arduino Raspberry PI - UK
http://www.ebay.co.uk/itm/111056754390?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

In addition I may add high power LED's to the headlights so the car can be operated in the dark.

Any other ideas drop me comment below