Yes, it does! Here's a an example of such an app being used, courtesy of the Lunteren fire brigade (video with English subtitles): https://www.youtube.com/watch?v=FoK_QOvm8n8&t=882s
Although this App simply snaps the license plate and does a lookup and I think what GP meant was a "random snap of the car itself, doing some machine learning magic... But that's possibly my bias towards hn comments :)
This is actually much more helpful, although I think not every country allows for has easy access to the license-plate data for vehicle type lookup...