Just as with any product, there is nothing magic about any of the information contained in these references. Someone, somewhere, had to take every applicable law in every law book and enter it into a database. What you wind up with are laws that a person can easily read and access that inform what can legally be done with a car, in a car, or to a car. Some laws jump right out and say "shall not," but some laws are a little more vague and need some interpretation. Maybe, when we see that kind of law, it would help to ask a cop or lawyer for help. Advice from the local heat is often cheaper, but if you pay a lawyer, you can at least ask for the answer in writing, which is better. If you read a law and are confused in any way, don't make the mistake of not asking for help. Asking for help is definitely better than ending up in trouble.
The great part about having an extensive resource on hand is that at least a car builder can get a "heads-up" on what might be a problem when it comes to registering or driving his or her car when the project is finally done. It's better to consider the laws when building than to find out later that the car can't be legally driven and must be rebuilt.
The information on this CD can be valuable if there comes a time to dispute a ticket or ruling. We recommend that car enthusiasts in every state buy a copy of their own state's motor vehicle code. That's still a good idea, but you might need a copy of the state's vehicle code where you got a ticket, or where you want to register a car. It might be handy to have information that covers other states.
Here's the other thing to consider about data such as this: it ain't free. Prices on these discs vary from just a few dollars to several hundred. Depending on your needs and resources, it might be a good idea to have your company or club buy a set and keep it on file for members only. There are even ways to keep this information updated on a regular basis, so that when new laws are passed, your information stays current. Since we've been running on so much about this, we should explain how to check it out for yourself (see the source box below).