Yes, I agree that some people will have to have the steering wheel prized out of their cold dead hands before they give up their car. It's really too bad as while I do think cars can be wonderful things, they also cause so many issues too. However, I will admit to some things:
i. I notice you are from Florida (home of the Blue Hairs

) -in the middle of a Florida summer, it's brutally hot. I do think the temptation to use a car for a 2 mile trip is (quite rightly) considerably more. In all fairness, not everyone on these boards has experienced that kind of heat as you just don't get it in the UK. I salute you for cycling in that darn Floridian heat!
ii. not quite the same, but I was at the Hoover Dam near Las Vegas when it was 105'F, and in the time it took me to walk from the parking lot to the dam I'd drunk a heck of a lot of water. Would I have liked to have cycled in that -even though it was a "dry" heat? Heck no.
iii. on the opposite extreme when it's minus 20 celsius and even lower taking in the wind chill in Massachusetts, it's bloody cold. It's one reason I chicken out of winter commuting let alone the compacted snow and ice and the thought that someone is going to just slide into you.
Mind you for all I've said, I think there are people who ride in the above mentioned weather -but I do really think they are an exception. Some of it must go into physiology; I for one can't stand very hot weather.
Anyway, one thing the UK is lucky for is a fairly temperate -if wet! -weather.
If that converts to 2.46 US dollars it's that and more and still people use the car for very short i.e. under 2-mile trips instead of walking, riding a bicycle, or even to take public transportation. Sadly, I think that most people would sacrifice anything in order to be able to continue to drive their car(s).