further than is it correct?

"further than" is correct

I'd use 'farther' rather than 'further', but not many pople worry about the difference these days.

The sentence as a whole sounds unnatural to me - as if the fog is being produced by the car.

I would say the two most natural way to word this sentence would be "With all this fog, I can't see farther than ten feet from the car" OR "I can't see farther than ten feet from the car with all this fog".

If you are in a city with a huge amount of air pollution produced by cars and trucks, then this is possible:
I can't see further than 10 feet in front of me with all the fog from the cars.

But the pollution should be called smog or smoke. not fog.

What do you all think of this?

With all the fog, all the [further/farther] I can see in front of the car is 10 feet.

That's some kind of regionalism, isn't it? I've heard it, but I don't know exactly where it comes from.

CJ

CalifJimWith all the fog, all the [further/farther] I can see in front of the car is 10 feet.

It sounds rather regional to me, CJ.

This one is more natural to my ear:
:
With all the fog, the furthest thing I can see is 10 feet in front of me.

AlpheccaStarsthe furthest thing I can see

Nice!

CJ