What I still want to do is get in the car and end up in California, not planned just sit of the pants go.
I actually did this - got in my old Volvo, asked my daughter. "Left or right?" and left our driveway in Vermont. We cruised the back roads to New Mexico, meandered to California, where it was too hot, so we looped around through the Rockies, back down to the Delta Blues region, up the east coast through North Carolina's Outer Banks and home again. No plans, just seeing what was there, eating locally and sleeping in the car or on the ground. Sweet trip.
(We listened to Sweeney Todd roughly a million times - great cruising music...)