More seriously, Street View as lint for road signs would be a superb idea! It's probably not something that anyone short of Google would have the processing power to do, but it would help a great deal.
(Assuming municipalities want help, that is. There are plenty of small towns that operate as speed traps, looking to shake down drivers by posting few speed-limit signs and many traffic cops. But lint-for-road-signs could reveal when an area has unresolved road-sign issues, and warn drivers to take another route.)
(Top HN post in Feb 2021: "Alphabet Corp announces it's dropping support for GoogleBlood starting April 1st: A blogpost advises users to replace their blood with blood from alternative vendors and restore from backups as access to all blood functionality (not just the SmartBlood(tm) features) will cease at midnight Mar 31th. Advertisers with prepaid in-blood advertising bids will be pro-rata credited in their AdsInside account.")
I don't really know why you'd think that line would be the one thing holding them back from super villainy, but you'll be relieved to know that it's definitely still there: