A similar device, a monitor for trucks, was similarly quashed. My sister was working for the major tire manufacturer in the service division that managed fleet

A similar device, a monitor for trucks, was similarly quashed. My sister was working for the major tire manufacturer in the service division that managed fleet tire rotations and replacements. Suggesting a pressure recording and reporting device would be useful in accident investigation, the trucking fleet operators were uniform in their response: horror. It would be used incriminate them in traffic accidents, never mind the benefit to reducing such accidents. Likewise, chipping tires never got past review. Too expensive (a few cents per tire) and it would allow unequivocal tracking of tires through their lifetime. Which would upset a vigorous ecosystem of tire black market sales. See, whole warehouses of inventory would be found to be empty when inspectors came around. Must be a paperwork problem! When in fact, they'd all been sold out the back door. I'm astonished airlines were ever on board with flight recorders.