Just got back, and the whole week I observed the following about the FP's for Radiator Springs Racers.
1. The FP's were pretty much done between 9:15 and 9:30 a.m. everyday.
2. It took on average 30-40 minutes in line just to get a FP.
3. By 8:20 a.m. or anytime after the line was already back to Hyperion Theatre.
The standby waits averaged 110 - 180 minutes depending on the day of the week, and the time of day. Tuesday was the heaviest day even more than the weekend. Twice on two different days, we went through the single rider line in 25 minutes. Hope this helps.
This is just what I saw. We were going to try to ride it before we left on Saturday, but it was still down. Oh well, I am glad we got to ride it a few times.