Even granting the automobile this unthinkable speed, greater than any it had yet shown, how could it have crossed all the intervening country unseen?

Knifing at unthinkable speed through the deep void of sub-space, Johnny took his new wife into his arms.

They fled at unthinkable speeds, crosscutting time, their bodiless beings making nothing of space and the limitations of matter.

I felt all the little pieces of me abruptly rush back together and slam into one another at unthinkable speed.

Tran was a gray and black honeycomb, he was in the sunny upper air, hurtling with unthinkable speed.

He knew he was traveling at an unthinkable speed toward a destination unfamiliar to him.

He glanced up through the dome, out into space itself, space shown distorted by their unthinkable speed.

It relates primarily to the manner in which capital travels from one country to another in amounts and at speeds once unthinkable.

Quite suddenly, the transition evened out and they were cruising at unthinkable speed.

Along them, as along pneumatic tubes, ships would travel at unthinkable speeds toward absolutely certain destinations.