Why is this corridor in Inferno called "Banana"?

The wall texture on the original Inferno (1.1/1.3) was yellow and the shape of the path was a banana.

Because it's curved like a banana.

(Some people online say it's because there's a yellow car, but this is incorrect - the same stretch was called 'banana' in CS 1.6, and there was no car on the map back then)