Solve this riddle

Has no prejudice. Will serve for the wealthiest or the poorest. Doesn't really say much, but is often full of hot air. Short in stature, but dynamic in ability. No concern for height. Will go high, will go low, will go fast, or will go slow. It plays well with the very young. It finds it's place, with the very old. At the highest speeds, it often pinches. At rest it stands, below 3 inches.