Diagram(graphics={Text(origin={0,80},extent={{-100,20},{100,-20}},textString="Car test on the road")}));
Diagram(graphics={Text(origin={0,80},extent={{-100,20},{100,-20}},textString="Car test on the road"),Text(origin={1,-81},extent={{-99,15},{99,-15}},textString="observe car.v and car.v_sp",textStyle={TextStyle.Italic})},coordinateSystem(initialScale=0.1)));