The amount of space in US cities (broadly, out into their sprawl) that is used up by cars is incredible and serves to make other modes of transportation (to include things like busses, even) less-useful and make cars on-par with or worse than things like bicycles once you take out the time spent traveling these inflated distances, ~50% of which distance typically exists because of cars, and the time spent working to pay for your car, to say nothing of then needing to dedicate more time specifically to working out (or just accept being less healthy) because you're not walking or bicycling as much as you could be in a world where cars hadn't sprawled everything really far apart with gigantic parking lots, half-mile-diameter highway interchanges, large barely-used front lawns to provide distance from unpleasant and loud roads, big unusable "green space" buffers from highways, et c.

Once you start really marking how much nothing you're driving by even in many cities, where that "nothing" is one or another use of land that exists solely because of cars, it's a bit of a shock. "Wait, work would only be 8 miles away instead of 15 if not for the effects of widespread private car ownership? The grocery store could be 1 mile instead of 3? And I spend how much time a week bicycling to nowhere in particular to make up for sitting all day long? And this car & gas & insurance costs me how many of my work-hours per week, just to pay for it? Hm... am I... losing time to cars!?"