11 seconds is fine for a street car. Once you start getting into the low elevens/tens and all of that with our cars...the weight reduction becomes rediculous and the car becomes uncomfortable to drive on the street everyday. My goal was to have a fast (not quick fast) street car that I can drive everyday. I think I pulled that off very well. You probably feel the same way unless you gutted the car lol.
An 11 sec car with well thought out weight reduction that can still be driven to and from work is what you should be looking for...well you have it already and so do I! Anything faster then that and honestly you should be looking into a V6, V8 or inline 6 car!
I love the fact that I actually get 35+mpg city driving, Have a car with a full (Ive got weight redution but you couldnt tell!) interior and a radio, a car that handles well, and all at the same time I have the power to weight ratio to walk or keep up with anything I see on the road! Put on top of that the fact that I can drop my top anytime I want and just ride out and....well...you get the Idea!