Its been one week since I bought my Chevy Volt, and its been a great experiance driving it so far I've driven 424 miles, 230 of which were in EV mode and have a lifetime gas milage of 93 mpg. Most days here in NJ have been fairly cold, which reduces the electric rangeto 30-35 miles per charge but yesterday it warmed up to 50 and I was able to drive the whole day (39 miles ) without using any gas. Over the weekend we took two long drives 80-100 which really lowered my mpg, but thats ok because with my old all electric MINI E I wouldnt have even tried the drive, and would have taken a gas car instead. With the Volt I have two cars in one, a short range electric and a longer range gas hybrid.
So what's it like to drive an electric car, in a word smooth, there is no roughness from the engine, no roughness from transmission shifting, and very little roughness from road. Sometimes I can tell when the engine comes on, mainly from a light vibration near my foot rather then any noise, but mostly I only know its on by looking at the Gas/Electric milage screen.