Today, frequent flier miles get you only so far. Instead, focus on redeeming your business travel hotel points when vacationing with family or friends.
Uber and Lyft have the advantage that they are travel apps that, like Google Maps, many people use every day. More travel apps should find a way to be relevant more often.
Most travel tech people don't see the opportunity for better hotel booking and reservations management coming from the restaurant industry -- as the response to OpenTable purchase demonstrated. This is the next great opportunity for startups in travel.