In Mastering Public Speaking, the second P is POWER, translation: Knowledge. Your knowledge of your topic should be never-ending. In other words, continually research your topic. After all, you are the expert. You should have a thirst to know everything about it - the old, the new, the relevant. That means never stop learning about it.
Your knowledge is not limited to your topic either. Your knowledge of your audience will assist you in customizing your presentation for them and secure your success. Your POWER will come from your knowledge of your topic and your audience, which provides the fuel for your presentations.
Your PASSION is the DRIVER and your POWER (Knowledge) is your FUEL.
Next: PREPARATION. Once you have all the 4P's working together, you will become a better and better speaker. The third P, PREPARATION, is your VEHICLE. You are getting ready to get on the race track, the highway, the country road, whatever visual you like best. You get to choose it! And your vehicle can be a hybrid or a ferrari - again your choice. Have fun with it.