Nobody accelerates at the rate their car is theoretically capable of in normal driving, except maybe passing at high speed. I don't like it when somebody merges

Nobody accelerates at the rate their car is theoretically capable of in normal driving, except maybe passing at high speed. I don't like it when somebody merges on the highway at 45 mph, but it has absolutely nothing to do with their ability to accelerate. Any car that can do 0-60 in ten seconds can go over 100 mph.