You went on a late night ride with your bike just to kill some time and obviously because you liked it.

You were on the highway as there weren't much traffic, listening to music which prevented you from hearing what's happening around you.

You were just watching your way while riding and enjoying your music until all of a sudden you got hit from behind.

You and your bike stopped at the emergency lane thanks to the guardrail or else you might have fallen out from the road.

Since there wasn't much traffic you could hear the engine of a car near around, most likely of some kind of a sport car.