As the relentless tempo of technology continues to accelerate, we need an acute understanding of the novel innovations that shape the tech landscape. This article will navigate the new realms of quantum computing, autonomous vehicles, and AI, observing their impacts on efficiency and functionality.

Emerging as the centerstage player in the tech arena, quantum computing (QC) has been gaining noticeable traction in recent years. Unlike classical computers that use binary digits (bits), QCs operate on quantum bits (qubits), which can be both one and zero at the same time, thanks to the superposition principle of quantum mechanics.

By offering parallel data processing, QC gives us the promise of unprecedented speed solving complex problems that are currently beyond the reach of the fastest supercomputers. For instance, Google's 53-qubit quantum machine, “Sycamore,” reportedly accomplished a calculation in 200 seconds that it predicts would take the world’s fastest supercomputer 10,000 years.

The advent of autonomous vehicles (AVs) is another area of potentially transformative innovation. As per reports from Boston Consulting Group, by 2035, almost a quarter of all vehicles could be fully autonomous. Unlike traditional vehicles, AVs use sensors and software to control, navigate, and drive the vehicle, thereby expecting to significantly increase efficiency.

Waymo, a subsidiary of Alphabet, has been at the forefront of autonomous driving technologies. Waymo’s cars are fitted with numerous sensors, including Lidar, radar, and advanced machine learning algorithms, to enhance functionality and safety. They are designed to reduce human errors that account for a large portion of traffic accidents today, theoretically improving safety and efficiency in transportation.

In the universe of tech innovation, Artificial Intelligence (AI) is the sun around which other technologies revolve. Over the past decade, AI has progressed from a niche, academic field to widespread adoption. Spurring groundbreaking improvements in efficiency, AI is recalibrating business operations.

Look at OpenAI’s GPT-3, an AI program that can virtually produce human-like text. Using "unsupervised learning," it generates text that convincingly aligns with the human style of writing. While translating languages or creating content, GPT-3 represents a significant advancement in reducing time and enhancing the efficiency of these tasks.

The road to the future is paved with constant invention and re-invention. While quantum computing, autonomous vehicles, and AI are making waves, they are just the tip of the innovation iceberg in our tech landscape. Each brings explicable improvements to the realm of efficiency and functionality, disrupting and driving the world like never before. These emerging technologies pave the way for an exciting testament to the power of human creativity and the infinite possibilities of technological treks into the unknown.