I prefer to drive out in the middle of nowhere with no traffic, but I do take it into populated areas. I second the posts about escape route planning. Couple of other suggestions off the top of my head:
Pick a lane position where you are more visible. On 2 lane roads where someone might be turning left through my lane of traffic I sit closer to the center lines so that they don't see an opening and try to quickly zip through it. I also back up more lengths than normal. Not enough to encourage them to jump through the distance, but enough that I can be seen from farther away. That is just one example, but think a lot about lane position and visibility.
Take extra care on right hand turns from a stop sign or right on red. I've been tapped many times in a normal car where it does no damage in this scenario, but would severely damage the M3W. If someone is in front of me, I never look away, assuming that they are pulling through the corner while I check traffic. I look at their car, they may think they are going to pull away and then change there mind and stop hard. Next I slowly creep up to a line where I will be able to see, then stop and wait for my time. You don't really want to stop and go and stop again. The person behind you might assume you have gone and be looking at traffic and rear end you.
Another one is a left turn yield at a light on 2 lanes(one in particular trouble spot near me that I'm thinking of). Pull into the center of the intersection and cars whip around me, opening up the car behind them to hit me. Stop at the line and they might not expect it and hit me. I reduce speed slowly, and frequently turn right and then find somewhere safe to turn around. I'm never in a hurry to get to a destination when driving this car.
But like others said, watch all around and have escape routes planned.
