I would be super interested in Echo in my car, but mostly because I don't have one of the fancy new cars that connects to my phone over bluetooth for that sort of stuff.
The right choice is probably a replacement nav and head unit. I'd rather have an old but nice car with great nav/ ent/etc, than a new car. I don't think I'm that unusual. I'd like to upgrade the electronics every couple years; happy to keep a car for 10-20y. Somehow those should mesh, but don't.
http://www.geekwire.com/2016/ford-working-on-amazon-echo-int...