This thread seems to have triggered a lively conversation. Must be the deliberately provocative heading...
Some supplementary notes to the first post.
This set was shot with the K 7 in RAW, continous shooting mode set to "high speed". With the K 7 this means 5,2 fps, which is on par with comparable Canikon models.
The length of the series was not limited by the body, the camera would have kept on shooting happily had the photographer not freaked out at this point ! According to the data sheet K 7 can store up to 15 RAW shots or 40 JPEG´s in one go with this frame rate.
As somebody pointed out, the car is blurred in the last picture. After the back of the car hit the surface of the road, the front slammed down very, very quickly. From my point of view it looked like a snake biting! Therefore at least some of the blur is caused by this unforeseen motion.
After crashing down there were car parts falling off and flying all over, but the car did not go off the road. However, pretty soon they had to retire from the race.
There is always room for improvement, but Pentax definitely has improved a lot in terms of AF and frame rate!