It's the dealers doing...not Honda...
The Pilot's they get delivered from Honda don't have it on, nor does Honda have anything to do with it...He's getting you for $189 for 5 minutes of etching and registering it with some service he's in cohorts with (and probably a worthless program unless your insurance company gives you a discount for this "service")
I'm not sure how a "4 digit number" would provide any benefit on a piece of glass when they are already manufactured 5 digits worth of Pilots...

The Pilot's they get delivered from Honda don't have it on, nor does Honda have anything to do with it...He's getting you for $189 for 5 minutes of etching and registering it with some service he's in cohorts with (and probably a worthless program unless your insurance company gives you a discount for this "service")
I'm not sure how a "4 digit number" would provide any benefit on a piece of glass when they are already manufactured 5 digits worth of Pilots...