Dear @stef1 ,
Thank you so much for sharing a contest with us .By reading your post , I come to learn that you gave various answer about your post.If the motorcar ban ,we will suffer a lot of .It took long time to reach from one place to another places. People used various kinds of vehicle in ancient time.If the people can take help from other vehicle,it will not be better than the other vehicle think that if there is no vehicles we will suffer a lot. we can not move easily from one place to another.If we use other vehicle instead of motorcar ,our environment will be from all kind of pollution. So, we all should participate in this competition to know various things. Good wishes for you.