That old Saab's had a 2-stroke engine. Not completely unheard of, but pretty different in a car.
Can't show a picture of it, but old Saab's had freewheels in them. Works like the freewheel on your bike... it lets you coast without the engine engaged. Originally install on the 2-stroke engines so it would seize from oil starvation when using the engine to slow the car. But they carried it over to when they switched to the V4. it's a pretty cool feature. You can shift down to say 2nd when you are coasting up to a corner, knowing that is the gear you'll want to be in on the way out.
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