If "anonymously" is your make or break criteria then that should be a red flag to reconsider your actions because it almost certainly means those around you (edit: a group distinct from the target of such actions) would not agree with you. And if you think everyone around would agree with you, then you'll probably do better leveraging them instead of the government. Generally, not just on this issue.

Now, I get that some social issues can be touchy in this regard but we're not talking about gay dating in Saudi Arabia here, we're talking about something pretty non-controversial. Everyone's body declines as they get old. Among seniors stopping driving at some point is just a part of the aging process.