Luxury SUV

Keep: Cadillac Escalade

Base Price: $61,935
Base Engine: 6.2-liter, 8-cylinder; 403 horses
Fuel Economy: 12/19 mpg
YTD Sales: 21,145

Heresy? Perhaps no other big, truck-based SUV more represents Detroit's poor planning than the nearly 6,000-pound Cadillac Escalade. Still, the Escalade is a huge, valuable brand. Future versions of the truck could be built on a thriftier crossover platform, shedding some of the eco-baggage while retaining the popular nameplate.

Kill: Lincoln Navigator