Strava integrated with Waze
Strava is the most popular app for cycling. Waze is the most popular app for drivers. My suggestion is a creation of a kind of link between both apps. But why? For safety. Once I'm recording my activity on Strava while cycling, it's possible to have my location. If Waze had a kind of connection with Strava to identify to the car driver there is a bike on the road, Waze would tell the driver to slow down or to pay attention and take a meter and a half when overtaking the bike on the road.
It would save lives. It would be good for Waze users and excellent for Strava users.