My wife and I - both recently DMs as of late last year had a tight (40 min) connection in ATL a couple months ago and got the pleasure of Larry picking us up in a Cayenne. She had bumped to FC, while I was a few rows back.
Since then, she's been tempted to book tight connections to see if we can get that experience again.
Didn't have to. Last week, we had a 2+ hour layover in ATL and Larry was at the boarding door again to pick us up (both in FC). Took us to our departing concourse, but dropped us off at A17 - and walked us to the Sky Club.
Spoke with him briefly about the Porsche xfer program... He and 15 others are on two shifts from like 7 am to 11pm (ish) with 8 Porsche's to ferry pax across the tarmac. He has a list of 'potential' pax that I take it to understand: if he can get to them, he gets them - but he (they) rush nobody and depending on where they drop off and when/where the next pickup may be, it's completely random...I'm assuming with higher $tatus, tighter connections getting some priority ??
So I'm not sure what status composes the complete list of who 'can' get picked up, but apparently, having a tight connection is not a requirement.