Travel tips/insights to southern Italy (Sicily, Naples, Rome)

I’d had maybe 6 years of biking in NYC so was kinda used to hyper aggressive driving* - being at a stoplight with 40 other Vespas gripping throttles and jockeying for position and just exploding at the light change - such a rush

* it was much easier biking in hyper aggressive traffic than traffic that’s 25% made at bikers on principal, 25% dangerously polite , 25% distracted and 25% just regular folk
I think an individual American in Rome can get their way when driving. Rome driving is super aggressive off the start, but people yield quickly when they realized they didn't win and just fall into line. It's very fluid and artistic, if not terrifying at times. Can't work in the US, because Americans never yield for anyone. But if an American goes aggressive in Rome, he/she can get their way because everyone else will yield.