Keep a Zipcar for as long as you want

The new features are a direct response to GM's Maven car-sharing service launching in Ann Arbor.

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Just ahead of GM's car-sharing service Maven launching in Ann Arbor, resident rival Zipcar is punching back. The latter's unveiling a new system wherein you could keep a car indefinitely rather than being stuck to a rigid reservation schedule. Switching up drop-off locations and destinations while you're on the go is an option now, too.

"The fact we are listening to what members want and how they want to get around is probably more important than what a test with 20 cars is doing in Ann Arbor," Zipcar president Kaye Ceille told The Detroit News, directly referencing Maven. Shots fired! Michigan's 150 Zipcars should see the new "flexible service" features by December.