Several Cybercab passengers were able to access the self-driving cars' hidden manual controls after an apparent glitch.

One of the selling points of Tesla’s much-hyped Cybercab — its purpose-built robotaxi — is that it doesn’t need manual controls. That’s why it doesn’t even come with a steering wheel or pedals.

But an early passenger who got to ride one of the self-driving cars after they launched in Austin last week discovered that they secretly have manual controls hidden in a touchscreen — the most practical way to control a car, as everyone knows — after its software glitched out and accidentally revealed them.