I read a story about someone who used a step-to-talk setup for their game comms: the motion was so ingrained that, one day while driving in traffic, they inadvertently floored the gas pedal while having a conversation with a passenger.
I don't think they hit anyone, but they did unplug the foot pedals from their PC the moment they got home.
When using pedal based PTT in the field, I would put the PTT pedal backwards and use my heel to develop different 'muscle memory' in relation to driving, etc.
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