The AHA's annual Kit Car show is going to be the last weekend of April. Great place to get inspiration and there are even a couple of Seven-ish cars sometimes. Admission is free, but parking is about $8-10. For the truly Locost experience, park in the big mall parking lot across the street and walk over. Works for me.
For more details check
http://www.kitcar.com/events.html
Saturday/Sunday, April 26-27, 2008
Spectacular 29th Annual
AHA/Knott's Kit Car/Replicar Show
at Knott's Berry Farm Amusement Park, on Beach Blvd. in Buena Park,
California, directly behind (north) of the Independence Hall building.
Enter at the Stanton Avenue entrance.