I want to crash my car on the highway
What is your reason for thinking of doing this?
I was thinking about the accident I had the day before
You should never try to intentionally crash your car. If you are having bad thoughts you should seek therapy.
Nahtherapy is only for losers
Many normal people need therapy.  Regardless of what you thunk about therapy, it is imperative that you do not crash your car and get yourself and others hurt.