There is nothing like seeing the front end of a car swerving into your lane and coming right at you to really ramp up the heartrate!
Hubby and I were coming home from dinner with two Dairy Queen ice cream confections (for people at home) in the drink cups of the van. We were riding on River Road in Pittsburgh (very, very dark) going from West Mifflin towards South Side. We'd just rounded the bend by the junk yard when a small red car, with its headlights off (it was around 9:30 pm) swerved into our lane and headed right for us!
Hubby hit the brakes, I put my hand on the dashboard to brace myself, I said a few very colorful words, the other guy swerved again, screeching his tires, and got back into his own lane just in time to pass us. Then he just drove away! The guy who had been behind him had come to a full stop. I guess he didn't want to be hit by flying debris (or bodies flying through windshields).
We ended up with racing heartbeats, ice cream on the radio, half of husband's junk from the back of the van visiting us in the front, and very wide eyes. That was as close to being hit head-on as I've ever been. It would have been BAD.
My hubby said that when he turned on his high lights, the guy in the other car seemed to "wake up". I don't know if he was high or drunk or asleep or what. I didn't even call the police, I was so freaked out (not to mention I was holding melty ice cream in both hands at that point). I didn't even notice he'd turned on the high lights, but in retrospect, I could see the other car a lot better all of a sudden. I know it was small and red and that's about it.
The entire thing took all of 2 seconds. That's it.