No, the if the recipient doesn't have iOS, they just get a regular text message as normal and as expected. My intent is just simply to not have to type or be distracted.
In my car, Siri and Dictation functions just like the built in Ford Sync. Tap a button, say "text Joe Smith that my ETA is 5 minutes" and then Siri will pop that up on screen and read it back to me then ask if I want to send it. All within less than a few seconds. Works awesome! And it works just by pressing the same steering wheel control button too. Fully integrated out of the box.
If you're not using a blue tooth system or Sync, etc...then you can either press and hold the Home button on phone or simply put the phone to your ear as if you are making a call.
No need to call. Besides, in business, I often need to just follow up a phone call or have some type of text "back up" to what was said and texting works great for that. Make cents?