Quickly he righted his motorcycle, mounted, and made off in pursuit of the high-powered automobile.
At the sound of the German's shot, Hal increased the speed of the automobile.
"McKenzie!" he cried.
McKenzie leaned forward so as to catch the words the lad shouted back to him.
"Get your guns ready!" cried Hal. "Don't let anyone come at us from the rear."
McKenzie understood. He repeated Hal's words to Stubbs, shouting to make himself heard.
"Can't anyone catch us from behind," Stubbs shouted back. "This car will outrun anything in Germany."
McKenzie made no reply, but looked to his guns. He knew that it was not pursuing automobiles that Hal was afraid of; but high-powered motorcycles in use in Germany would probably be able to overtake the car no matter what its speed.
So far, however, the road behind was clear.