[pixl97]

Why is that all the taxi app should do?

Getting a message "heavy traffic, your car has been delayed" is what everyone else seeming rational really wants. Messaging and awareness of the current state of the transaction they are in.

[stavros]

Before it arrives, you mean? That's still not something that a web page can't easily do.

[hakfoo]

Why not?

You have a page with a piece of JavaScript on it. Every 30 seconds it pings back "What's the status of request 12345678?" and updates a div.

If Domino's can display "your order has been handed to Steve for delivery", then a taxi service can say "Tom is stuck on the 405."

[pixl97]

You mean the same Javascript that gets paused when you go to another tab?

[stavros]

I agree, it was a double negative.