Pure propaganda. The driver was likely one of them that radioed for assistance. So they came and, coincidentally, "noticed a man experiencing car trouble," right where he told them he'd be.
Or, the entire thing was staged. Remember, this is the party that invented the concept of "paid crisis actors.".
Liars never seem to figure out that, once we know that they're liars, we don't believe a fucking thing they say, because, why should we?