"Panic! Mile race lost because Clip wasn't there. All Phoenix wild because King is missing. Major red-headed. Jerked me out of the high-school bunch and snatched me into town in his automobile; threw me onto the _Comet_ and offered me twenty-five dollars if I'd get the machine to you inside of an hour, and fifty dollars if you got to the park in time for the race. Jinks, but that machine is a dandy!" Matt and Clip were lifting the _Comet_ around. Clip held the machine while Matt rose to the saddle. "Wait!" roared Penny; "don't start yet." "Why not?" asked Matt. "Hawley is coming! See that dust? Pull the _Comet_ out here beside the road and crouch down so we can't be seen when the dust blows away. The driver of the car may take the other road at the forks." Here was startling news--news that might snatch success out of Matt's hands just when the prospect of victory seemed brightest. Another dust cloud was coming. As the three boys drew aside and crouched down the cloud dissipated slightly and through it they could see Dirk Hawley's motor-car, hitting nothing but high places and reaching for the hills like a streak. "He saw the major grab me and rush me away from the park," explained Penny, referring to Hawley. "His driver and another man were in the car besides himself. They took after me. I led them by a quarter of a mile at the bridge over the Arizona Canal. They stopped there and the man in the tonneau with Hawley got out. The whole bunch means trouble! What's Hawley got to do with this, anyhow?" "He's got a lot to do with it," muttered Matt, "but I haven't time to explain now. Ah, look at the cowboy, Clip!" The cowboy, who was coming across fairly high ground, could be seen waving his arms. Evidently he saw the motor-car and recognized those who were in it. "That does the trick!" whispered Clipperton excitedly. "Hawley was coming along the Bluebell trail. The cowboy is drawing them into the other road. Luck! That will clear the way so you can get past on the _Comet_. Wait until the car is close to the cowboy. Then make a rush." "For heaven's sake," begged Penny, "beat him in, Matt! The _Comet_ can do it." "The _Comet_ is going to do it," said Matt, between his teeth. All three of the boys watched while the motor-car flung itself up the gentle slope toward the cowboy. "Now!" said Clip, starting up and laying hold of the _Comet_. They trundled the machine back into the road and Matt got into the saddle and laid hands on the grip-control. "Ready?" cried Penny. "Let her go!" answered Matt. Penny and Clip gave him a shove. _Pop_, _pop_, _pop_, snapped the motor, the explosions presently coming so fast that they sounded like a dull roar. Off went the exhaust, and Motor Matt slipped down the slope like a brown streak, kicking the dust up behind him.