Nearly didn't buy the car, until I actually checked it out.
I have Buick Regals galore. Kept ripping the front dam off of those. Big difference, that was a hard, inflexible plastic on most cars. The Volt clearly understood, "get the coefficient, but don't tear it off" about right. I bought the car after testing it out.
One thing I did do however is paint the front driveway dip. Our driveway curbs are something more unique to the West, basically acting like a curb drop off rather than a slope to the street. Once painted with the very smooth epoxy concrete paint, about $15, the dam now smoothly slides, rather than scrape leaving a black powder, over the curb bump.
Easy to fix. The dam is worth the extra mile and a quarter, which is a quote I think EnergyCzar put out. Winter, I'll have to figure out how to plow the slush or jump over to my Lincoln MKX during the blizzards that hit here in Colorado.