When a dozen or so historic electric vehicles gather next weekend in Kingman, Arizona, as part of the Route 66 International Festival, fans of the cars hope that their presence will amount to more than just a one-off car show and help lay the groundwork for the world's first and only museum dedicated entirely to electric cars.

"I think everything is falling in place for this museum," said Roderick Wilde, one of the people pushing for such a museum. "I think the time for it is now."

The showing will help launch the idea, as will a just-announced temporary museum designed to generate interest and attract donations for a more permanent home, but even Wilde knows that plenty of work lies ahead before the doors open on a permanent museum.

Check out the original green mobiles here.