What worries me more is all the complex interactions required to make this work. The ability to remotely disable a safety system due to non-payment means that a

What worries me more is all the complex interactions required to make this work. The ability to remotely disable a safety system due to non-payment means that all the components in the payment chain are now potentially safety-critical. I wonder how Apple/Google pay engineers feel about that. Edit: And this may remain true even if the rider chooses the one-time payment option. Depending on implementation, bugs, etc.