Now here comes what is always missing in most car models. I thought that a suspension system would make a car more realistic espesially in animation. Sometimes you may notice that when the front wheels are steered, the shock absorber for example, may be seen. Due to the complication of the wheel suspension and steering unit, most modellers have just avoided it. So, stopworking in that empty model and yet the solution is here. I didnt major into the engine because it remains hidden in most of animations.