Transcript
All of the text is written backwards (mirrored right to left).
Title: Driving PSA: Random drivers can't grant you the left of way as a gift.
There's a big divided road going north and south, and a smaller east-west road coming off the east side of the big road.
There's a car on the smaller road labelled "You, waiting to turn right".
There are three cars and a lorry in the right-turn lane on the larger road, waiting to turn onto the smaller road. The person at the front says "You go ahead! I'm feeling generous." and is labelled "Time traveller pretending to be polite".
On the lane to the left of the right-turn lane is a car going 45 miles per hour labelled "Car that they are waving you into the path of".
Caption: "If someone waves you out, assume they are an assassin sent from the future to kill you and make it look like an accident."
Title text: You can't tell from the picture, but I also changed the truck into a lorry.