I agree. I was just about to post a similar suggestion. I can see two separate threads 1. Like Google's subject recognition (cars, landscape, dogs, people, etc) 2. Specific product recognition. I take a lot of photographs of classic cars and it would be really helpful for Lightroom to be able to suggest specific makes/models the same way that it suggests people. I'm sure that train, airplane and boat enthusiasts will have a similar use. Or marketers can use it to find appearances of their products in media. In fact I'll create another idea for this.