A lot of the time I find myself in a relatively decent flow of traffic and then they appear. The great big idiot. Sometimes there's a couple of them.
They're weaving in and out of traffic and I only wonder "how much longer before something bad happens?"
Though I've been fortunate enough not to have to deal with a negative outcome previously, some are not so lucky. As we see in this clip a BMW X5M and what appears to be an Audi A4/S4 Avant have quite the run-in at high speeds...