I don't know if anyone else has ever experienced this, but sometimes when the car is off but still warm (not hot, not cold... warm), I'll start the car, and it's like half the engine is running or something. For the first 10 seconds or so, it's like half my cylinders aren't firing and car feels very rough - almost like the engine is stumbling over itself, then after 10 seconds or so, you can "feel" the car smooth out and you can tell everything is working as it should.
It has always thrown me as to why this happens. Anyone have an explanation or theory behind it? Seems like this only happens with a warm engine.