Outdoor & car magnets 30 Mil round corners might be smaller than many big billboards that line up the city junction, yet overpowering. You can make best use of it by getting it customized with business information that shows up large and bold or stirs interest within a customer. It can be used for advertising over cars or other personal vehicles that you use while driving to office or going around city. It can easily drive your brand to success while going across.