If you’re looking to secure plywood to the top of your car, there are a few different ways to go about it. One option is to use cable ties. You can buy these in any hardware store and they’re relatively easy to use. All you need is some cable ties and a piece of plywood. To use cable ties, first cut the plywood into the desired shape. Make sure that the edges of the plywood are even so that it will fit snugly against the car’s surface. Next, place the plywood against the car and line up the edges with those on the car. Then, using cable ties, attach one end of each tie to one edge of the plywood and then attach the other end of each tie to another edge of the plywood. Make sure that both ends of each tie are facing outwards so that they don’t get in your way when driving. ..