I believe that to answer this, we need to go to the Jesuit method of deciding on questions of morality called casuistry. In casuistry, one tries to find a most similar case and see whether your question is most similar to this, or some other case. The case which one compares it to is called the Standard Case (see (and you shouldn’t necessarily go to Gladwell for such answers (see Gladwell mangles Casuistry)), Gladwell).

I believe that we can combine two relevant cases, one in which a pigeon was seen speeding by a German speed camera, see here, and one in which a motorist was saved from a speeding fine by a pigeon who, given our knowledge of speeding German pigeons, may have been the element of the scene to set off the speed camera, see here.

Thus, I believe that if you wanted to be let off like this, you would need to independently set off a speed camera with a lone tennis ball, while also constantly shooting tennis balls from your car to obscure the view of your face. Sufficient balls to obscure your face from the speed camera, may however have inadvertent effects in that the road may also be obscured from your face, and seeing the road is famously useful when driving. Don’t do it!