Well I'm finally HERE. Have uploaded the first 2 days of zipping around the city in the buses and on foot. I haven't had any time to write down any street names or mark waypoints since everything's kind of overwhelming at this point. :) I found that there's an official ordinance survey map the government sells copies of here, so it's probably very unlikely but I'll look into seeing if there's any public domain data I can get permission to use.

Most streets here have channels along the sides that are about 3 feet wide and 3 or 4 feet deep where the rainwater runs, they all connect and feed into the river. There's about 2 roads in my maps where the driving is around 50 mph, those would be divided roads with concrete barriers in the middle. I'll try and take some pictures but internet access here is proxy filtered and I'm finding things blocked.