when they were discribing cars, they said:

Cornering : does it hug the road or does it wallow about?

1. Is wallow about an idiom? I can only find some reference in british style.

2. In this context, when discribing cars, what does it mean?

Wallow means "roll around"? "with difficulty"?

About means "in opposit direction"? "all around"?

or is it like she likes to walk about, (walk to here and there randomly)?

3. Could you teach me how would you use wallow about in your common conversations?
If you go rapidly through a corner with a car, some cars will go exactly where you steer them, and others will pick up a little random motion from body lean, tire slip, possibly from a less than rigid body or perhaps some fault in the suspension. If they don't steer perfectly that extra motion is called wallowing. As the car wallows about, you have to adjust with the steering to keep going through the corner.

The term is not in used all that much, and no doubt comes from pigs, the animal that wallows in a wallow, generally a mud hole. You might say sombody wallows in self pity or indecision or some similar thing.

I don't think wallow about is used enough to be regarded as an idiom, but not sure.
akdomCould you teach me how would you would use wallow about in your common conversations?
That's easy! Don't use it! I never do. Emotion: smile