London Orbital on AO3
"I’m driving first," Sally said. “Guv can take over after me. If we’re all still mad enough to be at this after that, John can drive third shift. Then the freak, if we decide we can risk it."
"John doesn’t drive," said Sherlock.
"Then what’s John along for?" Sally protested. Which Greg reckoned had to be just Sally trying to wind Sherlock up. She knew better. All night in a car with Sherlock was bad enough. All night driving round and round the M25 looking for a killer, with Sherlock deprived of John Watson, sounded like a new circle of hell.