From your question, I got the following class diagram:
BEFORE:
________Car_________
/ \
NativeCar ForeignCar
/ \ / \
GoodNativeCar BadNativeCar GoodForeignCar BadForeignCar
AFTER:
CarAbstraction
|
CarAbstractionImpl
/ \ / \
NativeCar ForeignCar GoodCar BadCar
If we look at the bridge pattern class diagram at http://www.oodesign.com/bridge-pattern.html , it looks like a bridge pattern. However, the hierarchy of the CarAbstraction - CarAbstractionImpl classes may be limited. CarAbstraction HAS CarImplementor and NativeCar and ForeignCar will be inherited by CarAbstraction.
So, from the class diagram, it looks like a bridge template.
? NativeCar ForeignCar ? GoodCar BadCar? . NativeCar ForeignCar , GoodCar BadCar - , .