It is the TN-C-S thing which is a worry, never really safe, the video I watched said 500 reported loss of PEN per year with 10% causing injury, and TN-C-S was not permitted for caravans, boats, and petrol stations due to the danger.
The EV is same as caravan, with one change, the fire regulations need some where like 3 meters between caravan and a building so if the caravan has a TT supply and building TN-C-S you have a gradient over at least 3 meters, but cars are parked closer than 3 meters to the building, and also often parked where it would be very hard to safely put in an earth rod, remember services tend to run between the house and road, so goodness knows what one will hit when knocking in an earth rod.
With a three phase supply with loss of PEN one phase will likely go over 254 volt or under 207 volt reasonably rapid, so if the supply is tripped with under or over voltage line - neutral first followed by earth then it is unlikely anyone will touch the EV in the short time it takes to trip. But with a single phase only to the charge point the time before the volts go under or over the limits can be a lot longer.
Also with solar panels you may get over 254 volt before solar panels trip, and the charging pod does not auto reset, so there is the problem of returning to car in morning only to find it has not been charged, due to a solar panel tripping it out.
I was told 25 volt is enough to kill a cow, the human body may be able to stand 50 now they are saying 70 volt, but the drives and streets are not restricted to the human animal, badgers, foxes, cats, and many other animals may touch the car, so in the garage 70 volt may be OK where standing on a relativity dry concrete floor, but even in a gated drive you need to consider cats and postman, and with an un-gated drive small children may walk in, and their threshold is much lower.
It is not just the EV owner at risk, it is others, and I am not convinced TN-C-S single phase will ever be safe without a reference earth rod.
The other worry is charging away from owners home. The owner may have a charging pod with all the safeties required, but when he visits some one, it is likely the garden supply will be used, often only protected with a type AC RCD and on a TN-C-S supply which has no PEN loss detection, so it is only a matter of time before some one is killed, and most likely is elderly or child, both tend to touch cars.
And I have not yet talked about the fire risk, we have seen the recall of mobile phones due to battery fires, these are rather small batteries, the EV battery is much larger.
Also the damage to the environment as we try and dispose of these batteries. Compared with rare metals in a battery the diesel engine is clean. What we need is lighter cars, the lighter the car is, the less tyre wear, and it is the plastic used to make tyres which is washed off the roads into rivers and the sea which is a major problem. We need to reduce the use of impact zones so we can reduce car weight, so reduce fuel used, and reduce plastic waste, and all other pollutants. And also for shared roads with cycles ban armaco barriers. Being hit by a car and pushed through a hedge is bad, be being trapped between car and armaco barriers is worse.
So if you look at the accidents with a volvo and a relents per cars on the road, the volvo is far higher as the volvo driver knows he if protected and the relent driver knows he is venerable, if the drivers are made more venerable they will drive with more care, so it will cut down accidents. As proved with accident figures with relent 3 wheel cars.
OK 3 wheel cars made of fibre glass maybe a step too far, but the old citron 2CV with a carburettor did 60 MPH, same weight with modern engine it would be over the 100 MPG and no need for electric cars.
