....
.... and it's "goodnight vienna" in seconds with no further suffering or complications.
......
Far faster than I was prepared for

I've seen this twice with elderly dogs with major health problems
The first time the vet gave a sedative some minutes before the lethal injection. The second time there was no sedative. But in both cases the lethal injection did the job (sorry to be so blunt), they were both my dogs and dear friends

Maybe with humans it's more like the first than the second ? An attempt to "be nice" and "soften the blow". It didn't work though did it ? It's probably done so that the executors feel better about things, rather than for the benefit of the executed.
I've got a good idea

Lets bring back public guillotining. The guillotine is quick and it works

, and the cost of the execution can be offset by charging for tickets

Mr Osborne would like that

Incidentally . . . . .

it is generally thought that the guillotine was a French invention, in fact one of the first recorded uses of a similar device for beheading was in . . . . Halifax ! and long before the French revolution. There's your trivia for the day