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Trevor Ashline (right), owner of Safety Solutions, discusses options for head-and-neck restraint systems with racer Chris Hargett. Ashline encourages racers to try to get hands-on time with different restraints before buying one. One test is to actually try to bend the restraint and see how flexible it is. If it can withstand 70g's, you shouldn't be able to bend it. "Consider the worst possible wreck," Ashline explains. "If the car flips 10 times, I want the restraint to protect you on that 10th-consecutive hit just as well as it does on the first."