Maybe someday the air conditioning fairy will pay a visit and tell me
that because I've been a good boy I'll have A/C in all my cars
forevermore. More likely not, though.

I have a dash-mounted fan like this one:

<http://www.overstock.com/Auto-Parts/All-Metal-12-volt-Dash-Fan/2672978/product.html>

And while it makes a quite pleasant whirring sound, the air doesn't
reach the driver. I've tinkered with the curvature of the blades but no
matter what I do, the fan is best-suited for blowing stuff off the dash,
not cooling the driver.

Now, if you take off the chrome wire cage and remove the blade assembly,
then the blade assembly from one of these pops right onto the shaft:

<http://www.amazon.com/Volt-Fan-12V-Suction-Base/dp/B001449QRY>

Better blade design, it moves more air, and the air reaches the driver.

Rather than stop there, though, I thought I'd ask the group if they have
had good success with some other fan, or have come up with a good way to
  break up that bubble of hot air that seems to surround the driver and
passenger's faces and heads. (And no, I don't mean the hot air that I
emit when I express opinions!). At highway speeds, the wind wings are
far too noisy; and not enough air blows from the defrost vents or the
dash vents to do much good.
--
Rocky J Squirrel
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
Bend, OR
KG6RCR