A prototype Mercedes McLaren SLR has been spotted on a mountain road in Spain. The SLR is presumed to be upgraded later this year. The updates are said to include a power increase for its supercharged V8 from 626 to 650 hp, an updated interior, 19-inch wheels, a firmer suspension, a new braking system and increased weight savings. New colors (blue exterior, tan interior) may also be available.
From MotorPassion.com.
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