The NASA audit wasn't nearly as comprehensive as you may have expected: http://embeddedgurus.com/barr-code/2013/10/an-update-on-toyo...

NASA didn't find a software defect, this is not the same as NASA finding that there is no software defect.

Toyota absolutely built and sold dangerous vehicles with software and hardware defects. This was not only a matter of gas pedals sticking to floor mats.

Importantly in this context Toyota did not put customer safety first and decided to suppress the truth of the problem rather than own the solution. This is cause for concern as we move toward self-driving systems which have to be perceived to work in order for the product to remain economically viable.