I drove my race tuned 904 GTS on the street in the 1970s, and the clutch snapped onto the flywheel with a jolt.  If I stalled it, a plug would almost always foul and I would drive around on three cylinders trying to get the fourth to kick in. The backfires through the stinger exhaust would wake the dead.  That was a trip.  Sorry I sold the car in the 1980s but I sure don't miss driving it.  It was a car made to pull out onto the race grid and keep going until you broke or the race was over.  

I still drive my 1961 Super 90 Roadster on the street, but the clutch is easy to feather.  A sweet ride...