Have you ever bought something just to take it apart? I bought this remote control car hoping to drive it from my computer. I used Python, an Arduino board and about 300 lines of code. Took me a couple of hours work to get it together and another couple to put this tutorial up. For full instructions and working code checkout http://thelivingpearl.com/2013/01/04/drive-a-lamborghini-with-your-keyboard/
Things you will need:
Remote controlled car and remote
An Arduino board
The Arduino IDE
You can get an Arduino Uno from Amazon for about $15 and you will need to download the Arduino IDE from Arduino.org. The language is based on c/c++ and you will find many tutorials on this and other websites. I suggest you walk through the examples and get comfortable with Arduino before you try to take on this or any other project. It will help. The Arduino IDE has more the enough examples you can play around with to get to know the board.