This year’s Detroit Auto Show is remarkable for featuring eco-friendly cars.  Gone are the huge SUVs and gas-guzzling vehicles of the past.  Instead, the show is filled with small autos like the Smart ForTwo.

Fuel economy is one of the major innovations for many of these six new cars.  In addition, performance is also a priority in many models.

The Honda CR-Z, a new hybrid offering from the Japanese automaker, is based on the CR-X of the 1980s.  However, while the CR-Z won’t get the incredible gas mileage of the CR-X, it will have safety and performance features that the old model didn’t have.  And at 38 miles per gallon on the highway, the fuel economy isn’t too shabby either.

Lincoln also has a new offering, the MKX.  The crossover has an impressive 3.7-liter V6 engine, which is capable of 305 horsepower.  In addition to the performance specs, the car boasts a version of Ford’s new Sync software system.  The Sync system provides voice activation and hands-free operation of music players, cell phones, and other mobile technologies.

The redesigned Ford Focus is expected to wow car buyers with both its performance and fuel economy.  Up to 10% more efficient than previous iterations of the Focus, the 2011 model also features a 2.0-liter engine and a six-speed automatic transmission with dual-clutch shifting.

Even though it’s a standby when it comes to American sports cars, the newly redesigned Ford Mustang will probably turn a few heads.  The 5.0-liter V8 engine will generate an impressive 412 horsepower, and the redesign also delivers improved steering and suspension.

The Cadillac CTS-V Coupe was unveiled in November at the L.A. Auto Show, and it already has Cadillac enthusiasts excited.  The car is a lighter, leaner version of the CTS-V sedan will be available with a manual or automatic transmission.

Perhaps the most exciting new development for exotic car fans is the Mercedes-Benz E-class Cabriolet.  The convertible coupe features a cloth top and impressive sound insulation.  It also has several design innovations to protect occupants from wind.  The 382-horsepower E550 Cabriolet will hit showrooms this spring.

Luckily, if you’re anxious to drive a Mercedes, you don’t have to wait for the E550 to go on sale.  You can avoid the expense and hassle of ownership, including car payments, insurance, and vehicle storage, if you join an exotic car sharing club, rent an exotic car, or participate in an automotive dream tour.

Kate Miller-Wilson is a professional freelance writer, specializing in web content and technical writing.