While Google’s self-driving cars have an excellent safety record, that record isn’t quite perfect, and the company wants to do all it can to protect pedestrians should one be hit by a car.

A previous Google patent described a combination of foam bumpers and external airbags to minimize injuries to pedestrians in the event of a collision, but a new patent spotted by Mercury News swaps out the airbags for an adhesive coating intended to act as human flypaper …

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