Tesla CEO Elon Musk released a cryptic teaser to Twitter last night promising a new “D” unveiling on October 9. What is it? That’s anybody’s guess.

Lamborghini has joined the hybrid hypercar race with its new Asterion LPI 910-4. But can it keep pace with the McLaren P1, Porsche 918 Spyder, and Ferrari LaFerrari? Is it even trying to?

And Mazda has announced it will put a 2.0-liter Skyactiv-G engine in the 2016 MX-5. That should make for an engaging combination of lightweight and good power—a promising mix for the enthusiast.

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

Elon Musk Teases Cryptic Tesla Model D, Due October 9

Lamborghini Asterion LPI 910-4 Full Details & Live Photos: 2014 Paris Auto Show

2016 Mazda MX-5 To Get 2.0-Liter Engine In U.S, 1.5-Liter Elsewhere

2015 Chevy Corvette Z06 Performance Stats Released

52-Yr-Old Mom Beats Carjacker, Sends Him Running: Video

Jaguar Confirms New Details For 2017 XE Sedan: 2014 Paris Auto Show

Texas A&M Barrier Decapitates Trucks In Slow Motion: Video

Volkswagen XL Sport Concept Gets Ducati Power, Details & Live Photos: 2014 Paris Auto Show

2015 Bentley Mulsanne Speed Revealed With 530 HP And 811 LB-FT Of Torque: Paris Auto Show Live Photos

Ferrari 458 Speciale A: Full Details, Live Photos And Video