I'm wondering how long it took to get pulled out. Even tow trucks won't go into a mess like that. A muddy dirt road with very tight turns, and the tow truck would have to go in from the bottom, backing in all the way. And then trying to dig it clear enough to hook up would only be a fraction of the headache getting it the rest of the way.
A little car like that can actually do a respectable job on a muddy road if the ruts aren't deep enough to catch the frame. I had a 1968 Austin Healy Sprite that I took down a few questionable roads in it's time. The car only weighed 1600 lbs without passengers.