"second worst driving experience" has nothing quantifiable.
I would think my number 1 complaint about the driving experience was the occasional (but not predictable) incredible lag between pressing the accelerator and the car going faster and the ridiculous over-revving when I presume the car got confused about what gear it thought I should be in.
I've never seen the lag (much less "incredible") in any model I've known.
I've indeed seen the over-revving sometimes. That said, how is the over-revving any issue compared to the whole not having to even worry about manual gear shifting benefit?
It's like going to the US on a boat, because airplane food is bad. Yes, it might be, but it misses the whole point of getting there faster, easier, safer and with less concerns.
Check out a Smart fortwo on car2go sometime and be amazed :)
It feels somewhat counter-intuitive as normally you press the pedal to speed up, but when going uphill you sometimes have to really step on it just to maintain speed.