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daafcf72da1877f253019391990832c3f5314e15582c8df8e81bb51bf1ba9d71
nostr:npub1t7srnslk5ue5nyj9uqxvyuuvrmyvqpgcffanlyh3ndrevp8kh5eshse9ft Semi trucks use this to stop when their brakes are not working properly