Updated

For years, just enough classic car lovers and curious travelers wandered through the National Corvette Museum in Kentucky to keep the doors open. Now, after a massive sinkhole swallowed eight pristine models of vintage muscle, attendance has skyrocketed.

And visitors are as eager to peer into the chasm as they are to see the 'Vettes, if not more so.

Museum spokeswoman Katie Frassinelli says the response has been bigger than anyone imagined.

In the months since the earth opened up in February, business has shifted into over-drive.

Since reopening after a one-day closure, attendance is up nearly 50 percent from the same period a year ago. Sign-ups for museum memberships are rising fast. And the merchandising has started, with sinkhole-related shirts, postcards and prints.