After selling only 38 units in August, Chrysler slashed the Viper’s list price by $15,000 and saw a big bump in sales to 108 units in September. Get all the latest auto industry news in the Executive Briefing. 

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+   Chevrolet has released test data on the 2015 Corvette Z06, including a 0-60 mph time of 2.95 seconds and a 10.95-second quarter mile. More at Motor Trend. 

+   Toyota and Mitsubishi have suspended production at more than a dozen plants in central Japan due to a typhoon in the region. More at Reuters. 

+   Penske Automotive Group has acquired MTU Detroit Diesel Australia from Daimler AG and MTU Friedrichshafen. More at Automotive Business Review. 

+   Ohio-based Shiloh Industries has purchased Radar Industries of Warren, Michigan, metal stamping and assembly specialists, for $57.9 million. More at Crain’s Detroit Business. 

+   Four-time Formula One world champion Sebastian Vettel will leave Red Bull for Ferrari in 2015, replacing Fernando Alonso. More at BBC Sport. 

+   General Motors announced three new recalls on Saturday affecting 60,575 vehicles, including one campaign to correct an ignition lock defect. More at The Detroit News. 

+   Marussia Formula One driver Jules Bianchi was critically injured in a collision with a course vehicle in the rain-plagued Japanese Grand Prix. More at Fox Sports.

+   A $15,000 price cut by Chrysler has generated the best sales month yet for the current model Viper, with 108 units sold in September. More at Yahoo! Autos. 

For the previous Executive Briefing from October 3, click here.

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