Bob Smith (UK) wrote:
[...]
They had an interesting article in NS a few years ago. A small
robotic car thing that went around catching slugs and snails, that
made electricity to power itself from the decaying bodies of it's
victims. I am not a subscriber, so cannot do a search to find the
article.

The publication date wasn't shortly after the end of March, by any
chance, was it?

--
Mike.