After employing the most rigorous survey methodology (glancing around the parking lot), I am ready to report my findings.
1. Those shopping at the big Huckleberry's sale drive a pretty typical cross-section of vehicles. Maybe a few less pickups than you might find elsewhere in Spokane.
2. If, as some would suggest, only counterculture types shop at that store, then it appears that a fair number of counterculture types drive SUVs or minivans.