by mkellerm
This is an interesting topic. I'm also a Zipcar member, and have used it for both short trips and "traditional" day-long car rentals. It is a great service, and may even be profitable at this point. It probably has fewer than 500,000 members, but I am confident that those members are far overrepresented among Amtrak riders (as they appear to be overrepresented among participants in this thread). As it relates to Amtrak Guest Rewards, though, it is nothing new. Budget, Hertz, and Enterprise all offer points for Guest Rewards members. My understanding of the way this works is that the companies buy blocks of points from the transportation providers to compensate them for the cost, and I'm sure Zipcar is no different.
The important thing about Zipcar from Amtrak's perspective is not the availability of car-sharing at train stations, however; it is about turning car use from a fixed to a variable expense for consumers. As many people have pointed out on this forum in other contexts, one of the major advantages of car travel over passenger rail (or bus or airlines, for that matter) is that once you have committed to owning a car, the marginal cost of an intercity trip is quite low. If people chose not to own a car because of access to car sharing, or even if they downsize from two cars to one, the cost/benefit analysis for intercity travel shifts dramatically in the direction of rail/bus/airlines. The promise of Zipcar from Amtrak's perspective comes from shifting the demand curve overall, not from the availability of Zipcars at stations.
The important thing about Zipcar from Amtrak's perspective is not the availability of car-sharing at train stations, however; it is about turning car use from a fixed to a variable expense for consumers. As many people have pointed out on this forum in other contexts, one of the major advantages of car travel over passenger rail (or bus or airlines, for that matter) is that once you have committed to owning a car, the marginal cost of an intercity trip is quite low. If people chose not to own a car because of access to car sharing, or even if they downsize from two cars to one, the cost/benefit analysis for intercity travel shifts dramatically in the direction of rail/bus/airlines. The promise of Zipcar from Amtrak's perspective comes from shifting the demand curve overall, not from the availability of Zipcars at stations.