Bill Bailey pointed me to the 360Cities site, and I have been looking at it ever since.
One of the photographers on the site is a guy called Jook Leung. He does these amazing night time panoramas, that do not appear to be HDR. Or if they are, he somehow manages to get people in motion in them without much apparent ghosting or even much blurring. He has one of the Las Vegas strip that he took from a moving convertible.
I would just like to know how he does this. I suppose it could be very high ISO and some powerful noise reduction and single-image HDR from RAW images. Or it could be that he oh-so-carefully blends his images manually.