Now, now, you've got to be nice to old people. You might get to be one yourself someday....
As for gangsters on the motorways, it is certainly true that driving in Florida (or Texas or even California, I bet) you must drive with courtesy, never cut anyone off or give them the bird, because if you cause resentment, the offended driver is likely to be carrying a firearm....
However, it is perfectly safe and proper and legal to stick to the middle lane on a motorway. Other drivers will whizz by on both sides. They ought to make that a rule over here, it works very well. And you can turn right (they drive on the right, by the way) even if the light is red, as long as you have a good look. Curious customs....