Pointless Conversion

From an article on CNN about the effects of the current storms in Northern Europe:

"Traffic on the M-25 highway around London, the busiest in Europe, was backed up for miles (kilometers) after three trucks were knocked over by a single gust of wind in the early afternoon."

Emphasis mine.  I'm all for giving SI equivalents where possible, but surely the conversion from miles to kilometers (sic) would only be useful had actual numbers been mentioned!?

By this logic, the subheading at the top of the story should presumably read:

"Most powerful storm for years (megaseconds) sweeps across Europe"