Amazon's Zoox has received an exemption from federal vehicle safety standards, allowing it to operate steering wheel-less electric robotaxis for demonstration purposes. The NHTSA's decision follows a probe into Zoox's self-certification process and permits testing in select locations, although commercial operation remains prohibited. Zoox plans to produce up to 10,000 driverless cabs annually at its new factory in California, but new models will not be covered by the exemption.