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Roller coaster or racecar, which pulls more Gs?

Looking for a thrill? You're not the only one. You'll find kindred spirits at airfields going up for a skydive, atop bridges and towers with bungees attached to their feet and standing in line for roller coasters at the local amusement park. But you'll also find them in the paddock at the racing circuit.
So what's the commonality? G-force. It's like gravity, only in each of these cases, it's experienced by human invention. But which activity subjects your body to the greatest amount of g-force? That's what Nissan set to find out.
Before putting them back in the cockpit, Nismo sent out two of its young hot-shoes - Jann Mardenborough and Mark Shulzhitskiy - to an amusement park in the UK with a camera and a g-force meter to find out if any of the coasters could produce as much lateral gravitational force as an LMP2 racing car. See what they found in the pair of videos, below.

Autoblog Podcast #318

Toyota back on top, Barrett Jackson, Crowdsourcing your Dodge Dart payments, Nissan and Toyota double down on pickups
Episode #318 of the Autoblog Podcast is here, and this week, Dan Roth, Zach Bowman and Michael Harley talk about Toyota regaining the No. 1 sales crown, getting your friends and family to buy you a Dodge Dart, Barrett-Jackson, and Toyota and Nissan remaining committed to their pickup trucs. We wrap with your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Keep reading for our Q&A module for you to scroll through and follow along, too. Thanks for listening!
Autoblog Podcast #318:

Nissan recalling more than 1M vehicles for airbags that may fail to deploy

Nissan and the National Highway Traffic Safety Administration have issued a recall for 989,701 vehicles in the US due to an issue with their passenger-side airbag systems. Affected Nissan models include the Altima, Leaf, Pathfinder and Sentra from the 2013 and 2014 model years, and 2013 NV200 taxis. Affected Infiniti models include the 2013 JX35 and 2014 Q50 and QX60 utility vehicles.
Reuters is reporting that a total of 1,053,479 vehicles are included in the recall globally, with about 60,000 of the affected vehicles having been sold in Canada.
The fault apparently lies in something called the occupant classification system, which may, in the recalled vehicles, incorrectly classify the passenger seat as empty when it is in fact occupied by an adult. When the system fails to recognize the passenger, the passenger-side airbag may deactivate, and could therefore fail to deploy in the event of a crash.