First you need to have Oswald zap the Beetleworx until it becomes stunned. If done correctly it will emit blue waves. Twist the remote slowly until the waves change to bright green on screen then hold it in position until you are prompted to press a button.
Note This will occasionally have to be repeated.
Defeating the Taxi Cabs.
When you are outside Blot Alley at Club 15, hit the cabs on the front, and the hood will break off. Then, jump on the button to stun it, and paint or thin the blot to defeat.