To dream of a porsche sports car represents decision-making or control of a situation with an attitude that is adorable about why it gets away with doing whatever it wants despite other people. Noticing you are not guilty of a crime so you get away with doing whatever you want. Feeling faster than other people because you know people or can always have someone do something for you. Being faster than other people that is safely ot technically never jealous.
Example: A woman dreamed of seeing the man she was interested in dating driving a white porsche. In waking life the man she wanted to date was having problems leaving another woman to be with her, and kept spending time with the other woman. In this case the white porsche sports car may have reflected her feelings about the man she wanted to date honestly getting away with keeping the other woman in his life while technically not doing anything immoral because he hadn’t finalized breaking up with her yet.