Where I think some of the confusion comes from is the difference between
badge engineering and
platform sharing.
GM got in trouble with people because of badge engineering, not platform sharing. When they stuck a Cadillac badge on a Cavalier, it didn't make it a Cadillac, but rather a Cavalier with a Cadillac badge. With proper platform sharing - that is, sharing unseen components that do not differentiate vehicles but enhance production - you can produce different styled vehicles that more closely target the buyers they are trying to reach. Platform sharing that allows more efficient factory utilization is good platform sharing.
So Remember: [b]Badge engineering
BAD Discreet platform sharing
GOOD![/B]
