The difference is clearly noticeable and While the Sky Roadster lopes to 60 mph from a standstill in about 7.2 seconds, the Red Line sprints it in about 5.5 seconds. Peak torque is also up by 94 foot pounds to 260. At 260 horsepower, the Saturn Sky RedLine has 83 more ponies under its hydro formed hood than the normally aspirated Saturn Sky Roadster . The fuel is burned more completely and at a lower temperature; consequently, less fuel is needed. Enhancing power and fuel economy, direct injection mixes the fuel and air in the combustion chamber rather than in an intake manifold or port. A new engine, this is the first North American application of direct fuel injection by General Motors. Topping the list of differences is the Red Line's extra firepower thanks to its turbocharged Ecotec four. There are differences and there are similarities, but basically the Sky Roadster is hot while the Red Line is on fire. Saturn Sky PictureThat's the sort of predicament more than a few shoppers will face in Saturn showrooms this winter when the Red Line arrives to join the Sky Roadster. It's tough to concentrate on the meat and potatoes when 2 feet away a guy in a tuxedo is setting your ice cream topping on fire. The main course in this case is its hot looking two seat Saturn Sky Roadster while the turbo charged Sky RedLine plays the role of dessert. Barely giving us time to fork a bite or two of the main course into our mouths, Saturn has trotted out the bananas Foster.