tyres which do not have any tread (slick tyres) are used in racing because they offer maximum contact area, but are best-suited for race tracks, and not for ordinary use. with over 20 years in the industry we are not new to the game. walk slowly to it and jump/grab the edge. it makes a unique gift for any occasion ! if you have the same people in place [in city government] you have confidence it's always going to be that way, but we know how government works and the people change. 