WASHINGTON, March 10 : The National Highway Traffic Safety Administration said Tuesday it is seeking public comments on Amazon.com's self-driving unit Zoox to deploy up to 2,500 purpose-built, steering-wheel-free robotaxis. Zoox filed a petition in August seeking approval from the auto safety agency saying it would provide at least an equivalent level of safety to human-driven vehicles and need exemptions from eight federal vehicle safety standards written with human drivers in mind. "This