:up: But, ostap77, they mean different things.
Driving in mist is risky for drivers and other road-users + It was misty last night + You drove last night => 'It wasn't very thoughtful of you to drive at such a speed in the mist.'
But
'I drove at 100 kph last night through all sorts of weather conditions - rain, snow, ice, mist... whatever.'
'Really? 'It wasn't very thoughtful of you to drive at such a speed in mist. In fact, come to think of it, all the others were pretty risky too.
As billmcd says, the first is the more commonly used.
b