Launched from a vertical embankment next to the road. Couple inches to the left......
Sadly, this is very common, there have been fatalities in NSW. Almost all bridges and overpasses, whether over roads or rail lines, now have very high climb proof fences to deter the idiots.
The result --- increasing incidence of idiots rolling logs or large rock onto the road/rail line.
All very sad.
Tootle pip!!