Valet parking experiment at end of line stations likely to attract VIP customers.
Allow high priced services to finance overall improvements.
When refurbishing end of line stations in the future, construct an outer platform on the other side of the train connected directly to a valet parking driveway.
Customers willing to pay simply get out of their car and into the train, bypassing garages, fare gates etc.
The customer's car is retrieved based on later faregate usage.