One in a million chance - seven times in a row.

What are the chances of a one in a million chance happening seven or eight times in a row?
Pretty high I'd have thought. But I have just experienced exactly that.
Allow me to explain. I drive a Vauxhall Vectra - the odds on that were fairly low, given that 3 out of 4 of my more recent cars have been Vauxhalls. The headlight bulbs on a Vectra, in common with many modern cars are a bit of a pig to change. In my case it involves either lowering the bumper and removing the headlight entirely, or removing the airfilter housing to gain access from the rear and doing the bulb change with the headlamp in situation. The later is my preferred option, and I can now do it in around 30 minutes and still retain some of the skin on the back of my hand. The bulb costs around £7, so the DIY cost is £7 plus the cost of the elastoplast. A garage would charge a minimum 1 ours labour at anything from £25 up to £75 an hour, so I think the job ios worth doing myself.
Now the Vectra has some clever electronic gizmatry going on which somehow knows when a bulb has failed and lights up a light on the dashboard to tell you about it before a nice policeman writes you a note, payable within 28 days, requiring you to fix it and pay a £30 fine. I don't know what happens if the bulb on the dashboard fails. So when the bulb failure light lit up as I left work a few days back I knew immediately that the front offside had given up the ghost. But what to do, in the middle of a city which has garages that sell 42 different flavours of crisps but no essential motoring parts? Well, first of all you resort to old habits and bang the headlamp with the palm of your hand. Which of course works, and the light comes on. assuming I have a slightly dodgy contact I do not bother to buy a replacement bulb. Only the next night the same thing happens again - and the hit it with the flat palm thing works again. It is as though I now had a separate micro switch under the headlamp which needed a tap to switch the offside headlight on manually from outside the car. Whilst a novelty this quickly becomes a tiresome nuisance. Unwilling to strip out the airbox etc, I tried squirting WD40 up behind the headlamp which I hoped would help the electricity find it's way across any poor or loose connections any into the headlamp. It did, once. But the next day the headlamp failed to come on again.
Admitting defeat I bought a spare bulb just in case and stripped out the air filter case, to get at the headlamp and look at the wiring - all good, but the bulb had blown. The filament was hanging from one support with a definite gap across to the other side. So how on gods earth had it made connection not once, but seven or eight times over the week to light again and without burning out? I can only assume that the filament somehow dropped across the gap when I tapped it, and once it had it held in place whilst the current was flowing, but when it cooled after power was removed it failed again. But to do this seven or more times, it must have been a magic bulb.
Mysterious forces are at work I think.
Of course, if I could discover the secret of the magic bulb I could be a rich man - certainly people with Renault Meganes would pay me handosmely for such a bulb, as the price to change their headlamp bulb at a main dealer is an astounding £250.