The boy reeled under the shock, but he was not again overturned. To get away from the man and the dog he must have speed, and he must set the Comet to going its best in spite of the perils of the trail.
As he tore around the curved course, his resolute eyes following the path in front of the machine, he heard the snarling of the dog and the patter of his cushioned feet on the rocks.
The loss for an instant of the control of the machine would have spelled death for Motor Matt. To keep the Comet away from the edge of the cliff, and away from the loose stones fringing the wall on the other side of the road, was the problem with which Matt had to contend. It was a hair-raising problem, too, and called for every ounce of nerve and every particle of skill the boy possessed.
He dared not look behind to note the situation in that quarter. The man, he knew, he could easily distance, and it was the bounding Great Dane he feared.
His ears told him that the dog was holding his own—exerting all his power and neither gaining nor losing. But he was too close for comfort. Should he snap at the rear wheel and puncture the tire—Matt's thoughts could not carry the danger further. A good many things, just then, swung in the scales of chance, and what the dog might do was only one of them.
A minute passed, a minute so full of peril that it seemed like an hour, and the darting Comet reached the other side of the peak and passed from level ground to a steep descent.
Below him, Motor Matt could see the trail, winding in steep horseshoes just as on the other side of the mountain. But there was no precipice at its edge to threaten destruction.
By its own weight the machine would have coasted down the mountain at a clip never before equaled. Matt diminished the power that fed the racing pistons, but still he continued to drop like a thunderbolt down the steep slope.
The wind sang in his ears, and rock, bush, and stunted tree flashed by like so many missiles hurled at him by a giant hand. The speedometer could register up to sixty-five miles an hour, but the needle had gone out of business. If Motor Matt was not doing a good seventy an hour, on that hurricane drop toward the mountain's foot, he was far afield in his reckoning.