11.   But approaching or reaching supersonic speeds presents a new set of aerodynamic problems that raise risks in areas that are unknown.

12.   But at tracks like the reconfigured oval at Atlanta, slower speeds were reached because blocky cars did not corner well.

13.   But Hall said Wednesday the flight data recorder indicates the plane did not reach such speeds.

14.   But if no CART driver will attempt to reach those speeds during testing, then why test at Michigan?

15.   Hall said the plane did not reach supersonic speed in its initial dive, as some specialists had speculated.

16.   In isolated instances, thunderstorm winds may reach formidable speeds as momentum from strong winds aloft is mixed earthward.

17.   It took a long time to reach those speeds, but once it happened advances seemed easy.

18.   It will be able to reach supersonic speeds without using after burners.

19.   Meanwhile, the technological revolution that will merge old electronic media with the new is reaching warp speed.

20.   Since then, technology has reached electric speed, but our understanding of causes, not to mention effects, remain in pony-express mode.