Beware of road debris

I am not kidding you. Beware of road debris, especially when you're too close to a vehicle in front of you, say, 20 feet?

It happened to us when the lorry in front "scooped" up a piece of corrugated cardboard a few inches into the air with its air pressure. And we're right in front of the cardboard when it landed. Smack! Crack! And that's it. I know something is very wrong when I do not see the cardboard from my rear view mirror.

So, we took some cardboard from the van, pricked some
holes and used some telephone cables to secure it until
we're free to get it replaced.