Right now, if a passenger in a vehicle is asleep, there's no way to tell. I would suggest that @sp be added to sleeping passengers just like it is to someone asleep seated at a place in a room.
|-||zeezenfrozen||5m||stay goofin', gaffin', always laffin'|
|a||Mench||7h||Doing a bit of everything.|
|-||Ryuzaki4Days||8s||Take drugs. Kill a bear.|
|-||ReeferMadness||4h||May the bridges I burn light the way.|
|And 11 more hiding and/or disguised|