My installers connected the solar inverter to the home WiFi. I soon fixed that by changing the WiFi password, but I also discovered that inside the inverter is a stange-looking metal sim card, very small, but thankfully removable. I removed it. No-one is mucking about with my setup! (Except me 😀)

The human body can stand very fast speeds, but it can’t cope with acceleration. To reach high speed you have to accelerate HARD. Otherwise it’s weeks and months just to get moving quickly. And don’t get me started on slowing down when you get there…

Surely Sheldon should be here commenting on this?

Why did you not use this opportunity to name and shame, to help others avoid such evil manufacturers?

Are they working all through the night? One man working 40 hours a week with no sickness but including 5 weeks holidays per year works 1880 hours. A year of hours is 8760.

I used to have a 20 mile commute four times a day on dead flat roads. I bought a super-efficient car (skoda fabia greenline} and played with the speeds and gears to my hearts content to find the scientifically most efficient speed to use the least fuel. The result was that the slowest speed the car could maintain in the highest gear was most efficient. That was 30mph in 5th. I would usually average over 100 miles per gallon of diesel. Spent a lot more time in the car than i would have at 60mph, but audiobooks are great. This doesn’t add much to the discussion here. 60mph is much better than 70mph, and i’ve driven in wales with the 20mph limit in all urban areas and it doesn’t seem to cause any problems - i’m totally in favour.

In your car crash analogy, we are now past the point where hitting the brakes will help. The car will be irrepairably destroyed and all passengers will be killed.