Although they can perform a number of tasks of which no individual human is capable, they are not intellects and there are many fields in which they perform much worse than a human brain - for example, you can't have real-time conversation with the scientific community.
The kerb or curb weight is the weight of the vehicle minus any passengers or cargo. This refers to the weight of the car if it was parked on the curb without anything in it. It still has all the necessary equipment and fuel but doesn't have any added weight that isn't built into the car. The gross weight refers to the car's total weight when it has added passengers and cargo.
Class B: Any single vehicle which has a gross vehicle weight rating or gross vehicle weight of 11,794 or more kilograms (26,001 pounds or more), or any such vehicle towing a vehicle with a gross vehicle weight rating or gross vehicle weight that does not exceed 4,536 kilograms (10,000 pounds).