Controversy about whether bringing back a revamped Ford Explorer is a good idea. Ford's Farley thinks Americans might still consider an Explorer with high fuel economy, getting it up to 28 mpg from 15 mpg. But the evidence is that Americans have soured on SUV's. Consider that during the cash-for-clunkers program more Explorers were scrapped, and by a large margin, than any other model. Sales are down from 450,000 at one time to 52,000 today. To get buyers to look at the Explorer Ford is trying to change the looks from boxy to sleeker car-based crossover , and add high tech features. In fact it is going to be built not as an SUV, but on the same architectural base as the Taurus.