Ask yourself why, if that car drove through the streets of London, there are no other photos of them in that car.
Firstly, the photo was taken in Windsor. Just for you, there was other coverage of the car - here’s William exiting it at Westminster Abbey. 😀
Secondly, if you’ve not seen them in person ravelling around London, they tend to drive quite quickly when in a car with outriders - so not much chance to see the car, clock the people inside and grab your phone and take a photo.
x.com/TheKingsGuardsX/status/1767214169185497315?s=20