I went to brunch with a friend at 10:30am, took a car2go there, took an uber back b/c I had a few drinks. They called me at 7pm to tell me I hadn't ended my trip, and wouldn't b/c I had parked in the resturaunt's parking lot (I guess you're not allowed to do that). Walked 3 blocks in the cold rain to another car2go so I could get back there to end it, but the car was gone by the time I got there, so took another uber down to the car and drove it back. Paid attention this time: it gave me an "end trip" button, which I hit, it told me to put the key in the holder, I did, it sent my trip data to the server, and gave me a big splash screen saying "End Trip: turn off lights, apply parking break" I was like "wtf, that's what I did last time!" then, I noticed below all that, where I didn't notice it, it said I needed to flash my card against the reader outside the car again -.- $81 for that trip, plus the $10 uber, plus whatever they charge me to get back. Hopefully they'll realize that this is all a consequence of a poor UX and not charge me for having the car reserved all day.
Poor user experience is the leading cause of me getting frustrated and quitting a service. And if it can cause me to quit Facebook, the way I kept in touch with all of my friends and photos and lock-in, then it can cause me to quit your app, too.