What does it meaning overturned, in the dream?

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 ant Earth. ... Ten Thousand Dream Interpretation

Failure in a love affair is foretold by dreaming of either seeing or riding in a sleigh.

If the sleigh is overturned, you may regard it as a fortunate augury, for it will be a warning against some ill- advised move on your part.... The Complete Dream Book

Dreams of a boat being capsized symbolize that you are feeling off balance. Perhaps you feel overwhelmed by your circumstances and are in need of support. This dream may be showing you that you are rocking the boat, or that you fear that your ideas or leadership will be overturned.... Strangest Dream Explanations

Dreams of lakes are associated with romance, a time for pleasure. However, accidents modify the happy aspect of such a dream.

A storm indicates conflicts; an overturned boat, confusion.

A lake surrounded by abundant verdure, a desire to release an emotional or passionate urge.

A lake with barren surroundings, fear of a financial crisis.... Psycho Dream Interpretation