
It's funny... whenever I see a picture of a cool car in an advert or something, my brain will add the sound that I associate with such a car. If it's a Porsche, I can hear the smooth purring/whine of the tuned engine. The senses always work together to complete the big picture.
When I see a photo like this, of a Copenhagener riding a bicycle, my brain doesn't send audio signals. Instead, for some reason, I recieve olifactory sensations. I smell perfume. Or shampoo.
You'd understand if you rode around Copenhagen for a day. Bicycles are scented with fine perfume.
There's
the whole The Five Cycling Senses series if your brain wants more input.

Another classic example of a Copenhagen signal. A vague wave of a couple of fingers.

Busy City Hall moment. It's tourist season, so the streets are filled with camera-toting visitors. Copenhagen is the world's third largest cruise ship port, so we get a whole slough of daytrippers content only with taking photos of the sights before heading back to their ship after 4 hours.
The other tourists, who spend more time, tend to blend in more on the urban landscape.