From PDF intro: Very often, characters will like to customize their vehicle just like their firearms to make it more personalized. This may include everything from adding auto-tint windows or escape trunk latch and to an extreme of heads-up display system or a self destruction device. All of these modifications will improve the vehicle’s performance in one way or another. In addition, these modifications can be used in conjunction with each other. The following listed items are the most common of all customizable items for vehicles.