Presumably "this summer" means the next summer to occur, i.e. summer 2012. But if they are taking a road trip across the States, then maybe they are not wussies. Such a trip is perfectly possible in the winter. The wife and I drove from Mississippi to California and back over Christmas 1987, in our '76 Dodge dart, taking in the Hoover dam, Carlsbad, the Grand Canyon, San Francisco etc. Meteor crater was officially closed when we visited it, so we drove down the snowy road and hiked up to the rim. Never mind the museum, it is worth just looking at the big hole in the ground.