James R. Healey takes on the new onslaught of redone GM minivans now called crossovers. The facelifts are indeed only skin deep as Healey explains GM did little upgrading to the powerplants, mechanicals (sliding door track still visible) and most importantly interiors. While almost every other minivan, I mean crossover, has adjustable interior layouts and seating, the GMs do not. In the end the Buick stood out as being the most refined and fit and finish was much improved. But will that sway buyers?