This page shows every trip that's passed through a certain spot, determined by wherever you've clicked last on the map (there's a marker on the lat/long the query is based on).
Click/tap the map, the url changes, reload the page to see all trips near the given spot, anything rendering is a trip that passes within about 50 meters of that spot.
It started as tracking some running I was doing for a race (click here to zoom to that view), then biking, then walks, then I got a scooter and started scooting all over the place.
So, the data I collect via the Strava app running on my phone (i categorize my scooter trips as 'velomobile trips'), and regularly-enough synced from their system to this web application (it was originally a python/flask app + csv, now it's in Ruby/Rails w/a GIS-aware database)
a hard refresh fixes stuff sometimes.