when i was a sophomore in high school, we all piled in my friends SUV...like 8 of us, and were driving on the highway--6 lines, midnight, hardly a soul. this old muscle car comes up and this guy leans out the passenger window in a Jason mask. he is to the left of us and the car is just kind of swerving a little bit. so he looks a bit crazy and odd, but hey, it's halloween. we decide to slow down, just to let them go on their way...(going maybe 55-60mph). their car goes forward, and then comes back to our side. the guy leans out the passenger window, (as in his entire upper body out leaning agains the door), with a Jason mask and brandishing a machete this time. little bit freaky. so they pull in front of us and start throwing something at us. we weren't sure what they were at first but one hit the windshield and burst into liquid. we put the windshield wipers on. several more hit the car and burst. turns out he was throwing water balloons at us. he then gets maybe 20 - 30 yards in front of us and leans down and scrapes the machete against the asphalt causing all these sparks to fly. "wtf is this nut job doing?" we thought. definitely a little freaked out now, and then we start to smell gasoline. pulled off at the next exit freaked out. turns out the "water balloons" were filled with gasoline which he had thrown at our car and was then trying to light on fire from the sparks with the machete. though extremely "creepy" at the time, I always thought this would make an unsettling movie scene if done just right to evoke the same scenario we were in.