I rode through the old city on a cycle rickshaw this week. I did it twice, even. There are a number of interesting things to see from this point of view. The cycle is right there in the middle of everything and yet slightly separated, in the way that you don't have to maneuver traffic yourself but are free to look around.
So here are some of the things I saw:
Shirts being delivered somewhere.
The uncle who sells paneer.
Lots of traffic.
People on the steps of the mosque.
Pretty trinkets hanging from shops.
And the Fort just as it was being lit up.