SAAB - Future RR's with different drive trains?

Yeah, getting bits for an old Saab will still be a lot easier than swapping in another drivetrain for at least a couple of decades. A lot of people still drive much older cars which are no longer supported by their manufacturers. Essentially, anything over 30 years old is running on aftermarket reproduction parts or used originals from parting out other cars. A 40 year old Saab is not any worse off due to the demise of Saab Automobile, as it's highly likely that most similar cars of the era are also no longer supplied with replacement parts by their manufacturers.

Aftermarket suppliers cover an enormous range of old cars and continue to supply parts for them. This is relatively easy for them to do, as they have already 'paid off' the cost of the tooling by producing parts for the car since it was new.

Most consumable parts like filters and spark plugs are roughly universal, or at least easy to adapt from other makes. Gaskets are easy to make one-off or in small batches, you can even cut your own at home. The only parts of an engine which are particularly hard to reproduce are major castings, which last a long time and if you break one you can generally find a good used one from another car somewhere.

The other thing to remember is that Saabs are so over - engineered that they will happily do 250K plus mileages and generally the engines outlive the bodies.