system
Given the following post, respond as if you're commenting on Reddit:
human
[Speed]How did the bomb work?

Aside from the threats of remote detonation from the bomber, was the bomb solely connected to the speedometer? Couldn't they have broken the sight glass and removed the needle?
gpt
The speedometer is connected to the wheel, and reads the speed off that (by way of science). Even if you removed the needle, it would still read the speed because you're only removed the user-facing side of it.

It would be like trying to stop a hacker by disconnecting the computer monitor.