In rec.woodworking, DerbyDad03 wrote:
On Monday, May 17, 2021 at 2:06:40 PM UTC-4, Eli the Bearded wrote:
In rec.woodworking, wrote:
I don't see what's gained by just substituting a camera/display for a
mirror.
Fuel efficiency. On a modern car[*] it's (IIRC) 3% of drag caused by just
side mirrors.
Except that comment made was referring to the rearview mirror, not the
sideview mirrors.

Studies have shown that the drag caused by the rearview mirror is
significantly less than 3%.

I don't believe that's been studied, but I will believe that result.

Completely replacing the center rearview mirror is probably a bad idea.
Supplementing it with a camera is good. I back into my garage (to drive
out forward) and it is 100 times easier with the backup camera. That
said, I'd not want to use that camera, with those optics, for looking at
things further than 20 feet, nor would I trust that it remains
unobstructed in all weather conditions (particularly snow).

In vehicles that have traditionally lacked a center rearview mirror,
replacing it with a camera of some sort is a clear win. I first started
to notice garbage trucks with such about fifteen years ago.

Elijah
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doesn't know if the garbage trucks only had them active in reverse