I would say absolutely "yes" to your question. Velocities "could" exceed the speed of light.

Now, I will rephrase the question so as I can answer differently. "Do" velocities greater than c exist?

And now I answer a bit differently. I do not know if velocities "do" exceed the speed of light.

The reason should be clear as to the two different answers that I give. I read once, not long ago even, that there was the discovery of a star that was very flat in shape. Its shape resembled that of a plain m & m. Now, the fact that a star of that shape existed was not what surprised me, it was the fact that scientists were puzzled about the existence of the star period. Scientists apparently have never seen a star of that physical caliber. Nor did they ever expect to see one. The star's make-up went far beyond any scientific model.

So, that is why I say "yes" it is possible that velocities can exceed the speed of light.

Think about it