Quote Originally Posted by shortleg0521 View Post
When the gl 1800 started in 2001 it stayed the same till 2012 till 2017, hence the second generation.
But the later change only had minor style and feature changes. A generation change is much more then that. For example take a 1955 Chev Belair and a 1957 Belair. The 55 had no rear fins, but the 57 did. The 57 did not represent a generation change. For the Belair, the next generation change occurred in 1959 with a completely new frame, trim, accessories, and body style.

Minor changes takes a handful of engineers. A generation changes requires teams of many.