I will admit this part. If I ever chose to rewrite the history of General Motors here is what would have happen. Note this does contain some spoilers.
1. - The POD will involve the failure of the Chevrolet Vega which results in a serious boardroom coup.
2. - Roger Smith will be forcibly removed from GM as a result of the boardroom coup
3. - The GM bean counters are forcibly against their will into a position that they will never have a say in even the minute details anywhere (And all who have any accounting experience will never achieve any position at GM above the position of Chief Financial Officer (CFO).
4. - GMC would have forced out of the SUV market with Oldsmobile effectively taking it's place in the SUV market (And Chevrolet will be forced out of the Medium Duty, Heavy Truck, Type C and D School Bus chassis markets (GMC will be taking those positions in those markets instead)
5. - The Opel Senator A would have been forced to use the dimensions of the OTL Forth Generation Chevrolet Malibu (I will save the details for a alternate timeline that I write if everyone is interested)
6. - There will not be any real downsizing of GM's Full-Size Vehicles (GM's C and H platforms will be butterflied away in the ATL that I write).
7. - GM will be seriously cutting their coupe offerings in the ATL that I write.
8. - Certain GM platforms will never exist in the ATL that I write (Beside the GM C and H platforms don't ever expect the FWD X, N, L, U, or E platforms to ever exist in any ATL that I write).
9. - Buick will never be phased out and will end up effectively being Badge Engineered Opel products.
This is some of what to expect (Wait for me to rewrite the history of GM to truly see that I intend and it will end up rewriting some of the history of Ford Motor Company as well).