I don't know if axon does it, but the future is going to be mobile ALPRs. Uber drivers going around scanning every plate, selling to police, and helping predatory auto lenders repo cars. The latter is already being done, so it's just a matter of time.

Interesting point. Autonomous cars themselves could sell all the data they collect (like license plates, but also street maps, live traffic data, pot hole counts and locations etc)