Hinglish is spoken by one billion people.
Many live in the States. Cab drivers. waiters, silicon valley investors, motel owners. Want to get on their good side? A little Hinglish will do the trick.
Hinglish is also easy to pick up. If you know English, you know 70% Hinglish. Try a few more lessons and you won't be lying when you put bilingual on your resume.