Good name, and as you self are mentioning the topic is very popular at the moment.
Positive:
- topic is very popular.
- .net, .org is taken, thats good for the value.
- some of the ccTLD's are taken, also good for the value.
Negative:
- the hyphen is bad for the value.
A GPS-manufactor would be an ideal end-user, and with the right negotiation technic you could get good money.
As it is I would say that value is around high $xxx, but with the right end-user it could get high $x.xxx, you never know.
Good luck and best regards,