99 smartphones are transported in a handcart to generate virtual traffic jam in Google Maps. Through this activity, it is…

99 smartphones are transported in a handcart to generate virtual traffic jam in Google Maps. Through this activity, it is possible to turn a green street red which has an impact in the physical world by navigating cars on another route! #googlemapshacks https://t.co/3gixMxopE6 pic.twitter.com/6KcMm1XgAF

— Simon Weckert (@simon_deliver) February 1, 2020

(via http://twitter.com/simon_deliver/status/1223569659645112320)