But it would be an attempt to exceed the speed of light.

Since such a spacecraft cannot exceed the speed of light, perhaps very long.

This is the first time in history that a land vehicle has exceeded the speed of sound.

"Well, didn't he also say that it was impossible to exceed the speed of light?"

They could exceed the speed of sound at low altitude and move even faster higher up.

Her top velocity is unknown, but she can exceed the speed of sound.

The jumpshift was the only way so far known to exceed light speed.

It is the only seaplane to have exceeded the speed of sound.

We are exceeding the speed of sound, I believe.

You would then exceed the speed of light propagated in a vacuum.