IEEE 802.11p is a technology used for communication between cars, related to security issues, warning of incidents or mere exchange of different types of information. Future cars will have the ability to communicate to other cars and roadside data systems to spread information about congestion, road conditions and accidents. They will also access travel-related Internet services, publicity from business nearby, tourist information or even exchange user files. In this paper a highly configurable agent based simulator that models communication between cars in an urban environment will be presented. Using it, different measurements will be taken, which will allow us to analyze this technology in different scenarios.