1.   But at some companies, the product planners are doing marketing studies to determine whether to use fabric or metal roofs.

2.   Even a gutsy product planner tinkers very carefully with such a sales machine.

3.   Imaginative product planners have morphed sedans with pickups, off-roaders with minivans, military vehicles with station wagons.

4.   One of the biggest questions confronting product planners is whether to stick with their current efforts to design more affordable sport utility vehicles, like the small Wrangler.

5.   The other plus is that the product planners have done their homework.

6.   The product planners, trying to erase the lines that once separated cars, trucks and vans, were also busy melding the pickup and sport utility vehicle.