It can only fly for a few seconds, no? Where are you going to land in a snow storm if the literal Interstate is impassable? Everywhere else would be worse.
IIRC during the 2022 snowstorm, it was only impassable one way. Jumping over to the opposite side should be doable.
Have you ever slid into a ditch? I have a couple times. It's a fair amount of work to get the car out of the ditch. With thrusters, you only need a couple seconds to get out of the ditch and back on the road.