There are many different causes of poor vehicle performance. Here are some examples. If the engine RPMs are high but the vehicle will not reach normal speed then there is a problem with the engine's connection to the drive line. If the engine is running rough it will not be able to produce a normal amount of power. If the exhaust is plugged the engine will not be able to breath. There are many more possible causes.
yes it makes your car go really slow
a really really really really slow 1
people drive to slow and fast
you go onto first gear
only when it is on, it causes slow acceleration
pretty sure its friction
it depends what speed is fast and what speed is slow and what car you are talking about.
only if it is loud, and it mostly causes slow acceleration
no its not,,,,,is really easier to drive a more powerful car
Balance
No are you really that stupid
Well really it depends, anyting can cause traffic. For instance, someone could have had a car crash, traffic lights maybe working too slow, or somebody could be running out of petrol and be going too slow. It really depeneds anything could happen at anytime.