The National Transportation Safety Board recently divulged they had covertly funded a project with US automakers for the past five years, whereby the auto makers were installing black boxes in four-wheel drive pickup trucks in an effort to determine, in fatal accidents, the circumstances in the last 15 seconds before the crash.
They were surprised to find in 42 of the 50 states, the last words of the drivers in 61.2 percent of fatal crashes were "Oh, ****!"

Only the states of Alabama, Arkansas, Louisiana, Mississippi, Missouri, Georgia, North Carolina and Texas were different, where over 89.3 percent of the final words were: "Hold my beer and watch this."

 

That was pretty good. If anyone wants any info on "black boxes":

Since 1996 GM has been putting "black boxes" in passenger cars and some light trucks. In about 1998 or 1999 they included the larger vehicles such as Tahoe, Suburban and full size trucks. GM did not publicly disclose this, nor did they tell consumers about the black boxes. However, they do tell people about the black boxes in the owners manual to the vehicle. Everyone reads that, right? The company that manufactures the black boxes is callled Vetronix, www.vetronix.com. They make black boxes for all of the manufacturers that install them in their vehicles, which is almost all OEM's. Currently, only GM, Ford and Isuzu allow 3rd parties to harvest the information, though most other OEM's are expected to follow suit. There is a company in San Antonio called Injury Sciences, www.injurysciences.com, that will redtrieve crash data from the black boxes for insurance companies and law enforcement, though some law enforcement agencies do have the tools to do so.
The EDR's, or event data recorders, actually record the last 5 seconds before impact. And it does not record voice, just data about what is happening with the vehicle. The black boxes constantly record data while the car is on, but only store data from 5 seconds after a sudden movement such as swerving, hard braking, quick accelleration or stopping suddenly (impact). It will tell the vehicles speed until impact, by the second, and if the brakes are on or not, as well as when and if the airbags deploy. Cavaliers were recalled a few years ago based on data retrieved about the airbag system during a crash. It was found that the airbags would deploy when not needed, such as a side impact that didn't require front airbags.
Some people say that this is another way for "big brother" to watch us and use this information against us. GM said they started this to make a safer vehicle, and the OEM's that are following GM's lead say the same thing. I think that the Vetronix site has a list of which vehicles have EDR's. If the F150 is on the list it just made it this year, I haven't checked yet.
Before I go, there was a court case in which a guy heading south was turning left (east) at an intersection. During his turn he was hit by a Tahoe, and claimed that the guy in the Tahoe was speeding before impact. The black box data was retrieved, and it was found that before applying the brakes, the Tahoe was traveling at a whopping 12mph. At impact he had slowed to 9 mph. The guy making the left turn was found guilty of causing the accident.