A wireless data plan that works. Affordable, and insanely high cap or unlimited if possible. We have broadband internet at home for a flat rate (say something

A wireless data plan that works. Affordable, and insanely high cap or unlimited if possible. We have broadband internet at home for a flat rate (say something like $50/month). But it sucks. You're limited by wired or wireless via router to your house. There are mobile hotspots and data plans you can buy but they're kind of crappy (sort of like tethering from your smartphone) and the data caps are insanely low. Would love to have wireless internet built-in inside my laptop the way it is on my smartphone and have internet on the go anywhere anytime. I find myself in many places where free wifi isn't always available and this would be awesome to have solved.