Taildragger - each to their own. e.g why do you drive a 318i when you could drive a hyundai excel/grandeur/sonata...?
To paraphrase you
So if a Hyundai Excel can get me to 100km in 9 secs (as my 318i used to do) and can cruise happily at 110-115 (with the odd passing burst to 130), then why do I need it to go to drive a BMW 318i?
Personally I have no desire to drive an electric car, especially that one. As those who know me could readily tell you, I have my heart set on a dirty great aussie muscle car - I don't have to commute everyday, so the price of fuel won't worry me too much at all