Our driver was already outside in his spacesuit, inspecting our caterpillartreads.
2
Among their scientific gear were specially-designed cold-weather clothing and new-fangled motorized tractors with caterpillartreads.
3
The caterpillartreads of the troop carriers were churning.
4
For fortresses they were; vast structures of green metal, plowing forward implacably upon immense caterpillartreads.
5
They stamped and their caterpillartreads ground on the rubble and glass-strewn street toward the barrier.
6
Then he realized he was seeing the caterpillartreads and the underside of that yellow bulldozer.
7
It cruised on its little caterpillartreads, stationing itself a little way from its much bigger sibling.
8
On the screen, a machine rolled in on caterpillartreads, picked up the lux case and its contents, and carried them off.
9
"Let's see if he can use his caterpillartreads as well as he does the wheels."
10
When they get down, a big straddle truck on caterpillartreads picks them up-theyland in the doggonedest places, sometimes!-andbrings 'em back.
11
She jutted like some strange figurehead from the front of a little steam-driven cart, a heavy contraption with caterpillartreads, filled with coke and wood.