[Ah. He quickly dials a number in his cell phone and calls for a car. Luckily, he's got enough favors at the moment to get one that will be off-record and ask no questions. One day he'd be able to command such things on his own, and that day couldn't come soon enough.]

They'll be here in a few minutes.

[The sight of poor Sherlock running through the chilly streets in a hospital gown after a mad escape should be worthy of a few moments of laughter, but Mycroft was just too agitated and worried to oblige. At least he wasn't fainting or something.

His guilt as he looks back towards the hospital, as he rounds the corner, flares up again. Their parents would be arriving and they'd find both sons missing. Not to mention the legal implications of it all. Though perhaps, as Uncle Rudy explained, legality was very...malleable, sometimes, when it came to the work he wanted to do.]