Possible Clues:

• Soldier left off train gets late transport . . .
• 23 down for 19 down to get to 28 across
• One is always late for such transport
• Often-followed car
• Transport to be avoided
• You'll always be late for this sort of transport
• The vehicle that listens to the East of late
• Head car, maybe
• The very last way one goes and learns of the East
• Car known for its storage space