This is certainly old news --and shamelessly sooo self-indulging!--, but have you searched 'motorbike' in the new iOS 13 Photos app? It's wicked! The AI recognises even partial motorbikes, even from less obvious angles.
QFT. The only problem with the Google one is it detects toy motorcycles in a tiny corner of a picture of my kids, motorcycles in reflections of windows of buildings ...