Environmental activists have painted lungs on February 22, 2018 in front of the Federal Administrative Court in Leipzig, eastern Germany, where the court possibly will deliver a verdict on the legality of banning driving diesel cars when pollution reaches high levels. Since Volkswagen admitted in 2015 to installing software to fool regulatory emissions tests in millions of cars worldwide -- the so-called "dieselgate" scandal -- nitrogen oxide (NOx) and fine particle emissions from diesel motors