The Chicago Sun Tribune has this gas price projection for weary commuters:

Drivers will likely need to become comfortable with gas at $4 a gallon, as oil experts say an era of historic pain at the pump will endure well beyond the Memorial Day weekend, when prices traditionally peak.

You might trade in that GMC Yukon for a Honda Civic, skip the highway for the bike lane and redefine that time-honored tradition of the road trip.