How many have driven in a busy city? I HATE driving through Chicago!! Absolutely hate it. But any city in Minnesota is manageable! Any city in Ohio is easy too!
I drove in central London a handful of times. Not a lot of fun. Once was about 10pm on a Friday night, not the kind of time I'd normally want to run the gauntlet of city traffic combine with unlit cyclists, drunk pedestrians, possibly drunk unlit cyclists etc. The only reason I drove in was because a good friend needed to get to the bedside of a family member who wasn't expected to survive the night and they didn't want to deal with having to park and the associated concerns (cost, time required etc). So I drove them in and dropped them off.
What was really fun was when I flew into Philadelphia and picked up a rental car there. Of course by the time I got in the car and tried to get out of town it was 5pm on Friday and I was driving an unfamiliar car, on unfamiliar roads, with everything the wrong way around, in the rush hour traffic. For good measure I was driving something much bigger than I was used to - it felt like I needed a telescope to see the back of it (it was a Ford Explorer, which isn't huge by US standards but you don't see many of them on English roads). That was interesting. Although as it happened the heavy traffic was more of a blessing than I first realised, because it gave me chance to get used to the car before there was any expectation to be moving at normal expressway speeds.