All that ad states is that the 8830 has "built in GPS......capabilities," which it does, in fact, have.

My 8800 has the CAPABILITY to generate $1MM in additional sales revenues this year. Doesn't mean it will.

What's your case? There's nothing a jury of your peers would find patently misleading or false advertising in that statement. Hell, a jury of your peers likely won't even know what "GPS" stands for in the first place!