Im pretty sure 90s Hertz rentals in Italy had something like this. It was terrible, unreliable and once left us stranded. Whats not clear to me is if this bloc

Im pretty sure 90s Hertz rentals in Italy had something like this. It was terrible, unreliable and once left us stranded. Whats not clear to me is if this blocks the starter (high current) or is a bit smarter by blocking a lower current component (like injector pump, or the ignition).