I’m a planner. Always have been, probably always will be. Case in point: My wedding is in two weeks, and already I’m scheming as to where my future husband and I might “settle down.”

I know, I know, let’s worry about saying the “I Dos” first, right? Cut me some slack. Dreaming up our future abode is infinitely more fun than making seating charts.

But in all seriousness, when it comes to thinking about where I want to be, I’m really torn. On the one hand, I want that suburban idyll: a lovely house on a peaceful stretch of road that greets you like a hug at the end of a long day. But on the other, I adore the convenience of the city, in particular my access to the public transportation system, which means my fiancé and I can get by with only one car.

In doing research for tonight's Zipcar story, I found that I’m not alone. High gas prices and constrained energy supplies have made the suburban sprawl of the last few decades untenable. We will have to change the way we think about transportation to deal with modern realities.

Robert Puentes of Brookings says some of our neighborhoods are already adapting. Many suburbs – Arlington County in Virginia, for example -- are taking on very urban characteristics, replete with the sort of density necessary for services like public transportation and car sharing to thrive.

Puentes says the US population is migrating to these sorts of neighborhoods en masse. Certainly that’s good news for a company like Zipcar, which suits an urban or semi-urban lifestyle. But is the country ready to give up on the idea of car ownership -- or at least duel car ownership? Ellice Perez of Zipcar says she envisions a world where there are more car sharers on the road than car owners, but I’m wondering how long if would take to realize that vision. What do you think?