Why the /6

From a social science point of view, this thread is quite interesting....

From a drag racing point of view, no so much. We really don't formally drag much here (even thought I knew 2 guys that dragged their 60's minis and MGA) and the fines for stunting ( a broad category of running your car over the speed limit) are quite harsh.

I am curious because i lived around small displacement, high reving and power producing engines. There is a definate trade off or cost. How are these high revving, muscle bound /6 for lugging around town or city driving and maintenance ?