The iPod Car is, simply, a car that is linked into an iPod. A sample is shown below (note: iPod to scale). The iPod is often the determining factor between a car that simply drives to places and a car that rocks.
The particular type of car is not important. Geo Metro and Lamborghini, Peugeot and Dodge Viper alike benefit from the addition of an iPod.
In today's world, the car is the traditional centrepiece of one's material possessions; it is not only the means by which we commute to our job in the city and that provide that handy cupholder for the morning espresso to fit in, but it is also the throne of power from which we can gesture rudely and shout out the window at those immigrants who just can't get the hang of owning an automobile. Just as the presence of a cell phone affixed to the side of your head like a leech indicates that you are worth talking to, the iPod jacked into your dash indicates that you are a person of note.
Due to the unique craftsmanship of the iPod, it should be noted that not all cars can easily accommodate an iPod hookup. If this is the case, you will simply have to purchase a new car that does.
So the question is, why haven't you gotten an iPod Car?
Once you've loaded all your Mariah Carey and Avril Lavigne CDs into it, just play them constantly whenever anyone else is present, and you will be the object of admiration for all of your false friends. So go ahead: make your car an iPod Car (tm).