ashe Yes, if you have a several cars you can select one of them.
How it`s works: when Trip is started server waiting 1 minute and send request to mobile app for user coordinates. They should be compared for direct distances between them. If difference is more than (200* meters), server returns alert to mobile app. While car is in trip, next checking can be provided one time per 5-10 minutes.
I mean that this process can be initialized only by “Trip starting”. We dont need to monitoring location of user 24/7.