You won't find this in the MSM, but the number of vehicle-borne improvised explosive device attacks in Iraq has declined dramatically in recent months. According to a source familar with the totals, there were rougly 125 VBIED attacks in Iraq in May; by August, that number had declined to 68. Another stat you won't find in The New York Times: since the Iraq War began, at least 25% of all VBEIDs have been found and cleared before they detonated. That translates into hundreds--perhaps thousands--of lives saved.
With the decrease in VBIED attacks, there has been a corresponding increase in attacks using improvised explosive devices (IEDs). But (again) you won't hear the reason for that shift in tactics. Using IEDs allows the jihadists to conserve strained personnel resources. Apparently, there are fewer suicide bombers willing to die for the cause, and fewer fighters available for direct attacks against coalition forces, prompting a shift to less risky IED attacks, which require fewer personnel.