I get it. When we're driving, we have a heightened need for protection. On the scientific level, it's something that happens in the brain (the amygdala) that causes us to react very quickly when we feel like we're being threatened. It's a primal instinct, unless you can use the fore-part (which is a lot slower, mind you)of your brain that is connected with logic and reason before pure reaction.
Anyways,  in a particular incident, someone felt threatened by my driving when I needed to switch lanes in order not to exit the highway. I switched in front of him, but needed to slow down as to not drive into the car ahead, then switched to the next lane as soon as the way was clear.  A good 3 or 4 minutes pass of him following me, he proceeded to drive next to me only to flip me off and mouth *F#CK YOU* through the glass.  Then cut me off in turn and slammed the brake as I followed.
Right then and there, I was reminded of this great story that goes back about 2,500 years....

The Buddha was visiting a small Indian village, and people spontaneously gathered around to hear him speak. Among the listeners was a young man.  While listening to Buddha, he lost track of time and forgot about the work that was waiting for him on his father’s farm. The son’s father went looking for him. When found him, he went up to the Buddha and started screaming and scolding him. He accused Buddha of teaching children to walk away from their responsibilities.
             Buddha smiled and said: “When I come to your house with a gift and you accept the gift, then who does the gift
             belong to?”
             “To me, of course,” replied the father, caught slightly off guard.
             “And if you would refuse the gift, then who would it belong to?” The man, irritated about this strange question,
             replied: “To you of course, but what does this have to do with anything?”
             Then Buddha said:  “Your gift to me in this moment is anger and I refuse the gift. So the anger stays with you.”

I found myself in the car having this conversation with myself:
"I'm sorry, Sir, but I cannot accept your gift, despite how generous you may be in giving it. In exchange I'll give you peace..."
He pulls away, to begin his exit and waits for me to pull up again, 2 lanes over this time. Surely, he would expect that I'd be as enraged as he was.
I offer him a peace sign.
He refused... so it stayed mine. 

Kindness and love is the only sweet response that's needed, not revenge.

This one's for you. Stay peaceful out there! Namaste.

AS it starts, I've always been super positive.

"Sunny on the inside" had become one of my favourite expressions because it had to do with feeling in control of my own perspective, regardless of how others would normally interpret a "negative" situation. In my opinion, there is no such thing as a qualitative "negative". That meaning, only numbers, or integers could have a "-" symbol signifying that a quantity is less than the value of 1.
In the same breadth, a state,  a situation, an event, an emotion, or anything that happens just IS. It is neither positive, no negative. That is solely in the eyes of the beholder.

To give you an example, growing up, my family and I used to go on many family trips and vacations. Long drives to camping was a regular norm. We had many things happen on these trips. But for some reason, at the end of it, we would compare our experiences. My sister always tended to have a tragic catastrophe. I'll give it to her, getting car-sick, scratched by a cat, chased by a family of black flies, and attacked by a fish (ok, I'll admit the last is a bit of an exaggeration -- it simply fell in the boat and flopped around a bunch), then I'd call it a crappy experience as well. And for her, there was always something to complain about.

But I didn't. I always chose to experience the best of all things. The long drive, though not always the most comfortable, was very relaxing and scenic. We stopped often --though I couldn't wait to the final destination -- so we could stretch our legs, or try something new.  Bug bites came with the territory  of camping! I was ready for it.... and they were ready for me, no matter how many times I applied my repellent. We always had more than enough food to eat, and there was more than enough to see and do. And mine was always a pleasant, happy, positive experience with lots of fond memories.
It was just the difference between my sister and I to recognize "perspective" from a very young age. (Now, please mind you, she is not always negative, nor is she a negative person; simply for the example to display. And it was many years ago. Things  change.)

So, as is it goes, my words of advice to you are to take things as they are - neither positive, nor negative. It just is. Then that way, when something comes as a negative perspective, you can also say... "Hey. it could be worse."

Stay sunny.