In light of Scott Kalitta's fatal accident, NHRA has temporarily shortened race distances to 1,000 feet for Top Fuel and Funny Car races.
Seems kinda weird. Shortening the races by about ~300 feet doesn't seem like it'll drastically improve safety of the sport, especially for those cars. But, I guess it is a temporary measure while they take a look at their safety regs.
http://www.nhra.com/content/news/30355.htm