It is cold and I can't open my car.
Got a lighter? Heat up your key. Try not to splode yourself.
Clearly, you need to pull the lock out and put it on your dinner table.
Is the key not turning in the lock or is the door just frozen shut?
If it is the lock they sell a little lock de-icer you can spray into it to free it up.
If it is the door I've found a flathead screwdriver will give you the leverage to pry it open.
Bikes don't have doors, just saying.
Don't try yanking the handle until it opens. They're not made for that and they will break.
The fun stuff is when your door freezes OPEN. Sometimes the latch will freeze open and the door will not close. You then have to drive down the road holding the door shut until it gets warm enough inside to release the latch mechanism. This is especially fun if you drive a stick shift!
Do the back seats fold down--allowing access thru?...Go thru the trunk. Try not to lock yourself in.
I had a German hatchback once and had to get in that way many times in the winter - open the hatch, lower rear seat and climb through. I wondered if German people just don't go out in the winter.
You're just trying to start an argument to show how smart you are.
Make sure the foam sealer strip isn't frozen to the door frame, or you might tear it off.
And Ruben, once you do get into your car and wait for the defroster to clear off the windshield enough to drive remember driving on snow and ice is going to be different that what you're used to. Take it slow or your whole car is going to end up in someones kitchen.