Riding bike in -20 or colder is rather crazy but fun.
I do it most winter. 30km to work each way.
some tips for winter riding:
make sure u have good studded tires.
heated handlebar warmers are a great install. elements in each end bar and 12 volt battery all u need.
any amount of warmth is nice.
hardcore winter gloves, skidoo bella clava, wool pants, wool sweater, and just 2 layers of nlyon socks. or wool.
and shell skidoo suits r great. I have heavy motor cross pants. and skidoo coat.
some profiling ski goggles I ride with oakley.
dashing through the snow.
the electric bike is getting staged up for the cold in progress. will have some pics.