Security Camera - Why can't it sense LARGE OBJECTS LIKE CARS

The Ring security camera motion detection has either "person" sensing on or off. With "on" it sees people but NOT a huge car filling the camera sensory area. When person sensing is "off" it triggers when even a bird passes by. Is there a way you can make it sense people PLUS large things like a car or truck filling the frame but NOT small things like a bird ? I have already played with the sensitivity and this is not the same thing.I WANT to be woken-up if a car pulls up outside, but not every time a small bird flies by. My other Tapo security camera does this just fine, so this is clearly a problem with your capability, not something that is impossible to make work.Thank you for your help.