i was driving on the freeway with the aircondition on low.
then i saw white smoke come out, so i immediately turned it off. when i turned it back on, it disappeared...

the white smoke had no smell...any ideas?

 

Some chance it was condensation. depends on how cool the A/C was set and if you suddenly entered an area of more humid air. Since you don't show a state, I'm not sure of this is likely. When it happens, it's pretty surprising...I've had it happen mainly in the New Orleans/Baton Rouge area.

 

Yeah, happens to me occasionally here in Orlando. But its gotta be really cold in the car and really humid (like after a short/hard rain on a really hot day) to get condensation. Otherwise, get the gnome living in your airbox some Nicorette.