Minnesotans may need to be concerned.
No problem here. Never goes below freezing. 
Thanks! Where I live it does sometimes get that cold, but infrequently and this not being my only transportation I expect the Abarth will be warm and comfy back in my garage on those days.Read in other Fiat/Abarth forums that it's -30°C.
Yes. Apparently at one stage 500's in Canada could be optioned with them as an OEM fitment. Don't quote me on that, just read it commented elsewhere.Would adding a block heater help ?