A Guy Called Tyketto writes:

Safety can not be weighed against fuel economy.

They can be assigned priorities. I assign a higher priority to
safety, and I'm not alone.

People who put them in already understand the pros and cons for
what they are doing, and know when and when not to put them where they
are.

No, they do not, as Airbus has regularly illustrated, beginning way
back in Habsheim. Airbus cares more about fancy press than safety.
They care more about glitter than substance.

Oh, btw.. be sure to use the crank
next time you start your car, and to take out the computer modules that
help you start your engine.

No need for the first, but the second isn't such a bad idea.

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Transpose mxsmanic and gmail to reach me by e-mail.