Profile Used Car520 Location: Delaware, OH 43015, USA Find used cars for sale in USA online at Usedcar520.com. We offer wide collection of quality second hand cars at cheap prices. Get quotes for pre owned cars!! Last activity: on 07/09/2018 Joined: on 07/09/2018 http://usedcar520.com/en/ Design quotient Earn DQ points by participating in a challenge. What are (DQ) Points? DQ points are a measure of your contributions, they correspond to how active you are in the Research, Ideas and Evaluation phases of a challenge.