[redwitch]

I've seen bikes navigate the roundabouts quiite well. I've seen them do the tunnels and survive the hills getting out of them. I think the trick is to start slowly. First your neighborhood. Then maybe to some of the tunnels but turn around. When you think you're in shape, try the tunnels. You will probably be pleasantly surprised. As you get more used to the roundabouts and find you're in a hurry, odds are you will venture on them on your bike.

I have a scooter. I can get up to about the same speed on it that I used to on my bike (25-35 mph). For the longest time, I was terrified of taking it on the streets and roundabouts. Now, I prefer that to the tunnels and golf cart paths.

So, my suggestion is to give them both a try once you feel you're in bike condition again and then pick which way is more comfortable to you.

Happy riding!