This is one of the biggest drive of the year so if you're only going to attend one this would probably be the one.
More can be found here...
http://www.dtmpower.net/forum/showthread.php?t=172820 Saturday, July 8th – Drive to Leavenworth – Evolution Sports The sun’s shining, the breeze is warm…
it can only mean 1 thing…
It’s time for
the 6th annual Evolution Sports to Leavenworth Drive !
When: Saturday, July 8th
Where: Evolution Sports | Kirkland, WA
(Click Here for Directions) Destination: Midpoint stop Stevens Pass and on to Leavenworth
Meeting Time: 10:00 a.m.
Departing Time: 11:30 a.m.
Our 2006 Event will add a new twist. All participant cars will be required to make a minimum $10.00 Cash Donation to Charity. At the time of donation we will ask which charity you prefer and will total the results and forward to the charity that was expressed most frequent.
This is a great opportunity for you to feel good about your participation and shine a positive light on the European Car Community.
Please be sure to have a full tank of gas when you arrive @ Evolution Sports! 
Last year’s event was attended by approximately 300 European cars from VW, Audi, BMW, Porsche, Mercedes Benz & Volvo and others.
Here are some picture highlights
(Click here for a complete gallery).