How come we can’t just add X amount of gears to a transmission and have one of the most efficient cars ever?

Question

How come we can’t just add X amount of gears to a transmission and have one of the most efficient cars ever?

In: 95

Answer 1

CVT is most efficient but cars with CVT are only slightly more than 10 speeds with gas engines. The gas engine is the problem. Its only 30% efficient. In the future we will have more efficient cars.