I have found Americans elsewhere friendly and helpful. They tend to be very warm hearted, generous and easy to talk to. The same is true in Canada. My only experience of rudeness in Canada was an encounter with a French speaking official at Montreal airport. I'm not sure why he was so brusque with me, but I think it was because I didn't speak French to him .
Summers are hot.
No need for a pullover except in some air- conditioned homes. I've been told prairie summers can be very hot, but I've yet to experience one. Many cars in Canada have air-conditioning . Most cars have automatic gear changing. The same is true in Canada, although I think the percentage having automatic gear shift is not quite as high.