Audi has a new Competition version of its range-topping R8 V10 Plus supercar, and just 10 are earmarked for the United States. There isn't any extra power but there's more downforce and less weight, which should result in better track times.

SEMA is just around the corner, and this year Ford has called on a number of tuning firms to dress up its SUV models, as well as its Mustang and pickup trucks. The highlight among the SUVs should be the new Edge ST, whose twin-turbo V-6 is just begging to be upgraded.

Chevrolet will be introducing some new crate engines at SEMA, and one of them is the supercharged V-8 found in the latest Corvette ZR1. Code-named the LT5, this beast of an engine delivers 755 horsepower to start.

You'll find these stories and more in today's car news, right here at Motor Authority.

2018 Audi R8 V10 Plus Coupe Competition arrives, limited to 10 cars

2019 Edge ST heads fleet of custom Ford SUVs bound for SEMA

Chevy confirms Corvette ZR1's 755-hp V-8 as crate engine, drops it in '73 Chevelle

2019 Nissan Titan and Titan XD's new Apple, Android compatibility pumps price to $31,785

1,000-hp Yenko/SC package adds $66,995 to the 2019 Chevy Camaro SS 1LE

Google Maps adds electric car charging locations

Genesis gives first look at 3D digital instrument cluster

2018 Toyota Sequoia Limited 4x4 review update: SUV from the land before time

2020 Mercedes-AMG GLC63 Coupe spy shots

Documents: 60-kwh Nissan Leaf pricing aligned with Chevy Bolt EV