I just realized last night that there IS a way to get the computer
cars to drive for qualifying times, at least for road courses.
Adjust the BLAP value so that the times for all cars are worse than
they will actually drive, and the comp cars will go out and beat those
times, re-adjusting the qual times. You'll have to go through a few
rounds of qualifying for all the cars to get out and drive, though.
You could also do this for ovals, but you'd have to change qual to
the 10min open format. I can check and post the value in track.txt
if anyone is interested.