She knew she had missed the park when her wheels began to throw gravel.
"I throw gravel and snow at them," he said.
The motorcycle then braked easily and smoothly, barely throwing gravel.
Someone was throwing gravel up at the window.
It was assumed that foreign invaders wouldn't know which windows to throw gravel at.
The vehicle skidded off the asphalt and threw gravel as it backed toward him.
There was a spattering of noise at her window that could only be thrown gravel, although she'd never heard the sound before.
Employees started to throw gravel at the managers.
"For entertainment we can sit around and throw gravel at one another."
Then suddenly the car lurches forward, wheels kicking up dust, throwing gravel.