The 2015 Audi R8 may not share its platform with Porsche, despite years of previous rumors and reports that it would. What this means for the Lamborghini Gallardo isn't yet clear, but it looks like it could share its underpinnings with the Audi.

Jaguar has kindly gifted us a video comparing the sounds of the V-8 and V-6 versions of the upcoming 2014 F-Type sports car. If you still don't know which you'd pic based on specs, maybe hearing them will help.

And Chevrolet has unveiled three more cars for its SEMA fleet, including a 1967 Hot Wheels Camaro Concept, a ZL1 designed by Tony Stewart, and a Corvette 427 Convertible whipped up by Guy Fieri.

You'll find all of this and more in today's car news headlines right here at Motor Authority.

2015 Audi R8 Won’t Borrow Porsche Platform: Report

Jaguar Compares The Sound Of Its V-6 And V-8 F-Types: Video

Chevy Adds Three More Cars To Its SEMA Fleet

ViewCam 360 Lets You Watch Racing, From Any Angle

Scion FR-S Tuner Challenge Cars Revealed: Video

McLaren Special Operations Launches New Parts For 12C Models

Hybrids, Plug-In Cars Score Well In Reliability Survey

Small Cars Are Big At SEMA

Cadillac Plans To Raise Prices & Prestige

So, Is Jeep Really Moving To China, Or What?