A cloud. Photo Karen Ka Ying Wong / Flickr

Apple has confirmed maybe the worst kept secret in Silicon Valley: it’s been working on a cloud service, and will announce it at the June 6 Worldwide Developers Conference.

So now we know annual developer’s conference will unveil “iCloud®, Apple’s upcoming cloud services offering,” but we don’t know yet what it is, or what exactly will reside at the domain name it may have bought for $4.5 million in April.

I wasn’t long in the backseat of Google’s self-driving Toyota Prius, cruising smoothly down California Highway 85, before a sober, gray-flannel question pierced my giddy techno-utopian buzz: Is this legal?

On principle, it would seem downright churlish to penalize Google’s upstanding Prius — which kept letter-perfect lane position, following distance and speed-limit compliance — while all around us human drivers committed a panoply of illegal acts: talking on their phones, speeding, changing lanes without signaling, tailgating, you name it.

But what does the law say about autonomous vehicles?