Michael Press says...

So how good are air flow simulations of such practical
objects as automobiles? Do they predict vortex shedding
without hints? Do they predict vortex shedding with hints?
Do they model vortices or simply give the forces and
energy dissipation?

Depends on how much you believe the propoganda. I think there's alot of hinting
going on that's not fully being admitted to.