Take a Memorial Day ride on the 'Christmas Carol' train with Jim Carrey

Jim Carrey was his usual crazy self -- he even dropped his gum, although he picked it up afterward -- at the promotional event this morning launching Disney's cross-country train tour for the new 3-D holiday film "A Christmas Carol."

Click here for more details on the free, train-board exhibit about the making of this new motion-capture film. The exhibit opens to the public (for free) Friday at Union Station in downtown Los Angeles, where it remains through Monday.

Carrey and Bob Zemeckis helped Disney present a generous check to the Boys & Girls Clubs.

"A hundred million dollars?" exclaimed Carrey, who plays seven characters in the film. 

OK, so  it wasn't quite THAT generous. It was $100,000. Still nothing to sneeze at.

But the train -- a kind of a traveling museum to the period and to author Charles Dickens, combined with the high-tech FX world of mocap (the lingo-y name for motion capture) and modern 3-D advances -- is free and packed with interactive exhibits that take a look into the fantastical haunted world of Ebenezer Scrooge. 

It's way cool!

Flip video credit: Elizabeth Snead