Plastic bumper, melted in the sun?

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Derek ^ saying something like:

Not if it was a flat mirror - the rays wouldn't have been any more concentrated than normal full sunlight. A convex mirror would have diffused the rays to less than full strength. A concave mirror might have done it, but that'd be an unusual fitment.

Several flat mirrors could do the job, which reminds me of this...

The message from Grimly Curmudgeon contains these words:

Only for builders who like to shave as they drive along.

Any number of combinations of mirrors, curved windscreen glass, bottles and even reflective bodywork could focus the sun's rays. The 12" x 1" shape of the mark might indicate a 1"x1" bright spot moving along over time.

As the sun precesses across the sky...

The van's back today so we were able to do a ceremonial re-enactment.

The van is a high top Ford transit with large windows in the back doors. On the right hand back door there is semi reflective film stuck over the glass, the door was fully opened at 90 degrees to the van body, the glass is concave ...

The rest is history.

DG

Have the builders been working with a blowtorch round the back of the van?

No, it's reflected off the rear door window. I kept checking all day to see what's happening but the van must have been in a slightly different place.

Then at half past 3 SWMBO came in, mad as hell, to say the rear bumper on her Vauxhall Corsa had been melted. I went out and there was a brilliant, dazzling, "star" shaped image of the sun projected onto the back of her car from the builder's van door. 2 melted cars in 2 days

:((

DG

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember Derek ^ saying something like:

Well, f*ck me. LOL!

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember "Johnny" saying something like:

Need an awful lot of Transit mirrors to do this...

Hmm... I've got an old 2m dish outside and loads of mylar.

You'd have though you'd have lerned your lession the first time.

Have you driven too close to the exhaust of one of these 227mph superbikes?

I love the way it has a rear view camera because of the exhaust's heat haze.

To melt the back bumper on daughter's citroen ax she'd have had to be tailgating it at 227 mph, whilst in reverse. :-P

DG

The message from Derek ^ contains these words:

Hmmm, that'd be more the sort of thing you'd expect of a Nova.

There was a story that it had melted the front bumper of a nearby car while waiting at the lights. The exhaust from a turbine engine is rather hot.