For car troubles at night : I have worked for a - now dead - airline company for several years.
When that company closed down, I "salvaged" some of the high visibility jackets, used when working on/around aircrafts and runways.
And I keep one in the car kit.
And I use another one when cycling at night : if I get run over, it won't be because the motorist didn't see me <img src="images/graemlins/grin.gif" alt="" />
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Alain