In case you didn't know, in the USA, you mostly see "local" license plates because if you for example buy a car in Micigan but move to California, after about 3 months you have to re-license it with plates from the state you're living in. So here where I live, in California, you mostly see "California plates" but every now and then you see other plates such as Nevada, Washington or Floria. The further away, the less likely to be spotted.
Anyway, the first version is available right here: http://www.peterbe.com/uslicenseplates/index.html Code is on Github
It works best in smartphones like an Android or iOS app since it's built with jQuery Mobile
This is about 2 hours of work which is pretty quick but it was easy because I've used jQuery Mobile a lot in the past and this was more or less just getting familiar with the recent changes.
The app works fine and I even used it this last weekend to keep track of new license plates since Friday.
localStorage) using the Facebook API
Here's part 2 in the series.