Does that mean Chevs with HEMIs, or Cadillacs looking like Chrysler 300Cs?
I found this report at MSN Autos. Maybe Cadillac with adopt the Chrysler 300C design, but I guess they are buying Chrysler to reduce the amount of competition and so that GM can use some of Chrysler's technologies.
It is all as inbred as a Hill Billy wedding, so don't expect too much of a difference

Matt
Who owns Who?
BMW owns:
-BMW
-Mini
-Rolls Royce
Daimler/Chrysler owns:
-AMC
-Chrysler
-Dodge
-Eagle
-Hyundai
-Jeep
-Maybach
-Mercedes-Benz
-Plymouth
-Smart
Fiat owns:
-Alfa Romeo
-Ferrari
-Fiat
-Lancia
-Maserati
Ford owns:
-Aston Martin
-Ford
-Jaguar
-Land Rover
-Lincoln
-Mazda (Ford owns 33% of Mazda)
-Mercury
-Volvo cars
Fuji Heavy Industries owns:
-Subaru
General Motors owns:
-Buick
-Cadillac
-Chevrolet
-Daewoo (GM owns 44%)
-Fiat (GM has decided to divorce itself from Fiat as of Feb '05, but will retain 10% ownership.)
-GMC
-Holden
-Hummer
-Oldsmobile
-Opel
-Pontiac
-Saab
-Saturn
-Suzuki (2.5%, from 20%)
-Vauxhall
Honda owns:
-Acura
-Honda
Hyundai owns:
-Hyundai
-Kia
Isuzu owns:
-Isuzu
(Mitsubishi Corp., Itochu Corp. and Mizuho Corporate Bank owns part of Isuzu.)
Mitsubishi Corp. owns:
-Isuzu (13.6%)
-Mitsubishi Motors Corp (13%)
Nissan owns:
-Infiniti
-Nissan
-Renault (Nissan owns 15%)
PSA Peugeot Citroen owns:
-Citroen
-Peugeot
Porsche owns:
-Porsche
-VW (20%)
Renault owns:
-Nissan (Renault owns 44%)
Toyota owns:
-Daihatsu (~51%)
-Fuji Heavy Industries -- Subaru (Toyota owns ~20%. Toyota bought this from GM in late 2005. )
-Isuzu (5.9%, announced 7 Nov. 2006)
-Lexus
-Scion
-Toyota
Volkswagen owns:
-Audi
-Bentley
-Bugatti
-Lamborghini
-SEAT
-Skoda
-Volkswagen