I haven't driven in Rome, but I've tried the North of Italy, in Aoste. I'm from Paris and drive / ride my motorbike here quite often [0].

The only time in my life when I felt people were out to get me was in Italy. They drove like absolute maniacs. And I was on a big motorbike, not a bicycle going at 10 kmph. The road was wide, too (outside a city), with very light traffic, but for some reason they really couldn't be bothered to move over to the other lane when overtaking. Weren't going particularly faster, either.

---

[0] I'm not saying Paris is great, mind. I'd even say that in the last few years it has deteriorated a lot: whenever a light turns red, at least one person is guaranteed to run it.