There are a few things you need to know if you want to pipe a car. The first is that the car must be in good condition - it should be clean, free of any dents or damage, and have no rust or other issues. Next, you’ll need some pipe. A standard size for piping cars is 3/8 inch, but there are different sizes depending on the type of piping and the car’s make and model. You can find this information online or in a nearby hardware store. Once you have your pipe, it’s time to start by measuring the length of the pipe needed. This will give you a rough idea of how much work will be involved in getting the piping done correctly. Next, find out what type of piping you’ll be using - this will help determine which tools and techniques will work best for your project. Once you’ve determined which type of piping is needed, start by measuring the width of your car’s windshield area. This will help determine how wide the piping needs to be made - typically 3/8 inch wide is enough for most cars. Once you’ve determined how wide your piping needs to be, start by making a small hole in one end of your pipe and then threading it through the hole on top of your car’s windshield area. Make sure that both ends of your piping are threaded properly before continuing with your project!