Which gear should you use when driving uphill?

I recently moved states, and my new area is colder than I’m used to. I want to trade my current C180 for a car that does better in the snow. What’s the best Mercedes-Benz for driving in snow?

I’ve been having some problems with my Jeep’s thermostat but my regular warranty has already ended. Will the powertrain warranty on my Jeep cover the thermostat?

I love action movies, and in particular, scenes in cars. This doesn’t necessarily have to be a chase scene—I like almost any scene where the actors have to act and drive at the same time. I’m not a cinematographer, so I’m curious. How do directors film driving scenes?