To dream that you are riding in a landau, signifies that you will meet a fun, light-hearted person who will bring you much pleasure.
To see an overturned landau in your dream, signifies that your pleasure will come to an abrupt end.
To dream that you ride in a landau, with your friend or sweetheart, denotes that incidents of a light, but pleasant character will pass in rapid succession through your life. If the vehicle is overturned, then pleasure will abruptly turn into woe. See Fields and Earth.