ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,796, issued on March 3.
"Car racing system" was invented by Yoon Sunwoo (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a car racing system includes: a lane configured for car racing: a car includes: a first magnet for attracting a second magnet; the second magnet configured at one end of a second locking device so that the second locking device operates while being attracted by the first magnet; the second locking device for releasing a first locking device by that the second magnet is attracted to the first magnet; the first locking device for operating the car to be lifted and be departed from th...