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What do you think of this accountability mixed metaphor?

I’m now done with the preface and chapters 1-2 of Accountability Frankenstein, and I just noticed the following mixed metaphor:

For a school official to say blithely that elementary teachers should deemphasize -ing word endings in language arts because -s and -es endings are on the test but -ing endings are not is letting the fear of test consequences drive common sense out the window (Tobin & Winchester, 2004)

Normally, you don’t drive in and out of windows. But on the other hand, maybe the idea of a car going through a window is precisely the image I want to convey.