It depends on how big the ferry is.
About 5000 cars can fit into an average car park. If you have lickle cars, you can fit more in, you,Tard!
you can fit a total of 8 cars in the garage
Usually you can fit 4 sedan cars. 2 cars and 2 in top of them.
The large cross-Channel ferries can hold 1,059 cars or 180 semi-trucks.
None - they couldn't fit throgh the door.