Making a mesh grill for a car is not as difficult as it seems. All you need is some wire, some screws, and some heat. First, take the wire and cut it into small pieces. Then, screw the smaller pieces of wire to the larger pieces of wire. Finally, heat up the metal so that it can start to melt. Once the metal has melted, use your screwdriver to make small holes in the top of the grill and then put your food on top of the grill.