Hot on the heels of the new Ford Bullitt Mustang and the new Shelby GT500KR, America’s favorite muscle car drives into its 45th anniversary year sporting a new factory-installed glass roof.

The 2009 Ford Glass Roof Mustang provides a third roof option for customers and responds to their growing desire for more natural light. Production of large sunroofs has increased nearly 200 percent in North America since 2003, according to Just-auto. The growth is driven, in part, by consumers’ daily commute time. The number of consumers with commutes lasting more than 60 minutes grew by almost 50 percent between 1990 and 2000, according to the U.S. Census Bureau.

The new glass roof will be available as an option on both the V-6 Mustang and Mustang GT beginning next summer.

At $1,995, the new roof provides customers a less expensive option than a convertible, without compromising the coupe’s versatility, headroom or climate-controlled environment.

Nearly one out of every two sports cars sold in America is a Mustang, and it remains the best-selling convertible. The new glass roof addresses the fact that 62 percent of buyers in the sports car segment are interested in a sunroof or moonroof on their next vehicle, according to J.D. Power and Associates research.

Mustang’s Glass Roof is made of tinted privacy glass, which reduces both infrared rays and vehicle cool-down time by 50 percent. A manual roller blind is built in, allowing owners to further control exposure on sunny days.

The specially formulated glass also protects interior fabric material from solar radiation deterioration and discoloration by reducing solar light transmittance. To help improve acoustics and Mustang’s interior quietness, the glass also features a layer of vinyl that reduces noise, vibration and harshness.

The glass roof Mustang is built like a coupe and has been developed to maintain the structural integrity of Mustang. The glass itself is safety glass, meaning that it shatters without sharp or jagged edges, like other automotive glass.

Glass Roof Mustangs will be assembled at the Automotive Alliance International plant in Flat Rock, Mich. The unique glass is installed at Ford’s adjacent vehicle personalization facility.

Like its coupe and convertible counterparts, the Glass Roof Mustang has endured a battery of tests measuring quality and craftsmanship.

During the development phase, production-level prototypes ran through a rigorous prove-out, including various water, air leakage, durability, squeak and rattle and vehicle dynamics tests. Top quality drives the development team – as evidenced by Mustang’s first-in-its segment ranking in the 2007 J.D. Power and Associates IQS, VDS and APEAL studies.

In addition to the new Glass Roof Mustang that goes on sale next summer, two other derivatives join the Mustang V-6 and GT in Ford showrooms early in 2008:

The Mustang Bullitt returns to the streets four decades after hitting the Big Screen and features the latest in Ford Racing Technology. Inspired by the original movie car, this modern classic is designed to deliver a perfect balance of power and performance for enthusiasts, delivering 315 horsepower and 325 pound-feet of torque. With limited production planned, Bullitt carries on the Mustang tradition of affordable performance with a $31,075 Manufacturer’s Suggested Retail Price.

The Shelby GT500KR arrives in time to celebrate the 40th anniversary of the original Shelby Cobra GT500KR, known as “The King of the Road.” Building on the strong foundation of the Shelby GT500, the KR features a 5.4-liter supercharged V-8 with a Ford Racing Upgrade Pack and a SVT-tuned suspension. It is estimated to deliver 540 horsepower. The Shelby GT500KR carries forward the spirit of the original car – with 1,000 units planned for production.

The 2009 model year marks Mustang’s 45th year. Mustang was first introduced in 1964 at the World’s Fair in New York with a price tag of $2,300. Ford sold more than 417,000 Mustangs in its first year.

Today, as the car approaches its 45th anniversary, nearly 9 million units have been sold.

Aside from its legion of loyal fans, Mustang also stands out for safety. The Mustang convertible is the first sports car and first convertible to earn the highest possible safety ratings in all New Car Assessment Ratings test modes performed by the U.S. government. The coupe earned five stars in frontal crash evaluations for both driver and front-seat passenger and in side impact for driver and rollover testing. It earned four stars for side impact for rear-seat passengers.