I want to like Uber; there’s a lot to like about it, especially when you’re traveling in Miami, whose taxis often feel like they’ve drifted north from Cuba. (Not the drivers; the taxis.)

But in addition to the dubious ethics of its founders, and the serious privacy concerns I have about a company that can track your moves from point A to point B, I had an experience with Uber on Friday night that raises some serious issues about its lack of regulation.

I flew into Fort Lauderdale on Friday on my way to Miami for a Worth event. Landing at about 7 PM, I called an Uber car and got one promptly; the driver, Larry, was a nice guy, a Frank Sinatra fan, and the car was a new Cadillac. All good so far.

But after we’d been driving for about 15 minutes on I-95, his cell phone rang. He answered it. I heard him say, “That’s tonight? I thought that was tomorrow night? Really? Okay, I’ll be right there.”

I’ll be right there?

He hung up the phone and said to me, “I’m really sorry, but I have to do something and I’m going to have to drop you off.”

You can guess my reaction.

“That was my sister-in-law Lenora,” Larry explained. “I was supposed to take her to the hospital, and I completely forgot. You’re going to have to call another Uber.”

I said, “She can’t call another Uber?”

Okay, I know that wasn’t very nice, but I was a little freaked out.

Oh no, Larry answered, I could never do that. She’s my sister-in-law.

He promptly exited the highway onto an isolated access road and pulled into the parking lot of a Denny’s. “I’m really sorry,” he said as I called up the Uber app on my phone, and drove away.

So there I was, standing in the parking lot of a Dennys in the middle of not-very-nice nowhere, my luggage on the sidewalk next to me, waiting for another car, which took about ten minutes to arrive.

I gave the guy a one-star review and Uber didn’t charge me for that portion of a trip—the least they could do, I thought, and when I wrote them to point that out, they didn’t bother to respond.

Having a guy cut short your ride and drop you off to wait for another car is not good, and it’s hard to imagine that happening with a regulated company, or one with a stronger ethical culture.

Uber just held a financing round which valued the company at $40 billion. I’m not so sure. What if municipalities created a taxi app that worked just as Uber does? How hard could it be?

And at least they wouldn’t drop you off at a Dennys in the middle of nowhere…