I mean, you could always put something like this on any vehicle.
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Make sure you are heard loud and clear with 100 Watts of power blasting your voice or waking the neighborhood with the built-in selection of popular sirens. If that wasn’t obnoxious enough, hook it up to the built-in auxiliary cord to ensure everyone can hear your favorite Taylor Swift song whether they want to or not!
Granted, having it pre-installed probably lowers the bar to use, but it’s not like it’s something fundamentally new.