Bad.. I won't go into that, because it's meaningless. Nervous.. roughly equivalent to cautious. And that's true, and that's a quality I would hope to find in every driver. As for the rest:
Being comfortable in a situation means diddly squat. Being comfortable is not alone an indicator of capability. It is the person who is vigilant, who does not trust other drivers to behave in expected ways, and who, yes, is nervous and considers himself fallible, that is the safe driver. It is the driver who considers himself in control, and is completely comfortable, paying less attention to conditions, and considers himself immortal who is dangerous.
It's like Plato said: the people who would make the best politicians are the people who don't want the job. It's the same with drivers.
"it is time to get a credit card to complete my financial independance" — Tibby, Aug. 2009