Magic Tricks

While that spark looked obviously fake to me, the existence of this question proves that it looks real enough to fool people (which means it was a bad idea to have added it to the trailer).

It also shows the creators don't have enough faith in their product's ability to garner interest without a little deception.
The reaction of the spectators would have been sufficient without the cheesy special effects.

In Electric Sensation the visible spark is a computer effect. This will not happen in a live performance.

This Isn’t A New Idea Theres A Sharpie Marker Out That Already Does This!

Joshburch you are right, but for the wrong reason. It will probably NOT happen in a live performance. At least, not right now. Not because it's impossible, but because someone didn't figure out how to do it yet.

When you invent a new illusion, it's like solving an algebra problem. Think about the end result you want to achieve. Afterward, back engineer a new technique step by step.

The end result is magic.

Yes, it is obvious to you. It was obvious to me as well, or I wouldn't have asked the question in the first place. However, a magician is a special breed of creature. Actual sparks may not exist right now, but that doesn't mean one of us won't come up with a way to make it a reality.