While this exact system uses positional feedback rather than frequency resonance, it’s still an important foundational step

The levitated object doesn’t need physical contact to remain suspended — just a carefully tuned EM field.

This device could theoretically be modified to use oscillating fields where resonance is required to achieve lift — meaning only objects tuned to the field (e.g. via their own electrical resonance circuits) could levitate at that spot.

You could imagine a multi-frequency setup, where each vertical level corresponds to a slightly different EM oscillation frequency, and only objects tuned to that frequency “lock” into levitation

To move from this tabletop demonstration to the Fifth Element-style traffic system

Replace the positional sensor with a frequency-tuned system. Only objects resonating at the frequency of the field are held in stable equilibrium.

Instead of one coil and one object, build a field grid over a city, each node broadcasting at a specific frequency-altitude.

Objects (vehicles) contain resonant receiver circuits or magnetic response structures, which let them “lock” into place only when in the right field zone.

The real-time EM feedback system seen in the video could evolve into a city-wide feedback net to ensure dynamic stabilization, but governed by permissioned frequency zones rather than manual feedback sensors.