Should be a fun cruise, have yet to see a Prius at a meet. Details here: http://pstoc.com/forum/viewtopic.php?t=891&highlight=
It does look like fun... I'm thinking of going... as long as I can get up in time to get up to woodenvile... for the start!
Well. The PSTOC run to Leavenworth was a blast! To review: The Prius managed to maintain 70MPH speeds all the way to the top of Steven's Pass. However, at the summit there was one pink bar left. One MR2 lost oil pressure on the way up to the summit. We stopped to take pictures and fix the car. Within three miles of the summit another MR2 and Supra managed to get stung by a WASP (WSP). The officer was nice enough to give them 75MPH tickets... From Olympia to Woodinville, from Woodinville to Leavenworth, from Leavenworth to Olympia I managed 50.5 MPG.
The weather was great! It was about 108 degrees in Leavenworth in the late afternoon. The Prius didn't complain a bit! Some of the guys on the trip were stunned by the Prius. They couldn't believe that it had so much power. To quote one MR2 owner "Wth knew that a Prius in it's 'egg' shaped glory was such a sleeper. It caught many of us by surprise."