I had one years ago… It never made a sound. It just recorded how I drove and I started getting safe driver discounts on my insurance.

This is why they changed their API policy the way they did. They wanted to sell it rather than let bots scrape it for free.

IIRC, this is a big deal because they are achieving more energy out than they put in.

If I’ve been reading these correctly they are achieving it with tiny amounts of fuel and slowly working up as they achieve success. I’m seeing these as proof of concept and fantastic steps in the right direction.