When Clark arrives at the garage to confront Pete, Dante leaves to go and fix a car. Then as Clark and Pete share the scene, you can see Dante's arm as he is walking away.
Safety bars are seen clearly in the stunt car as it flips around and lands on the side of the road. The mechanism that is used to propel the car upward can also be seen.
Clark overtakes Pete's car. If you pause the video as he passes the car, the blue blur "Clark" has facial hair.
Clark then stands in the road to stop Pete, and Pete brakes heavily to avoid hitting him. During the few seconds of braking, it is clearly not Tom Welling, but a stunt double with a different haircut.