If you are seeing data on a map where the path shows a straight line, there may be a simple explanation. Bouncie considers the start of the vehicle’s engine and the turning off of the engine to be a ‘trip’. When you see straight data-lines, it generally indicates the vehicle is in a single location for an extended period of time with the engine running.
What happens is the GPS signal is reflected inside the vehicle because the vehicle isn't moving. Each time the device receives the GPS reading, the signal is getting confused with the signals reflecting inside the vehicle.
As a result of the reflecting signals, the GPS data records an incorrect location. The map then plots that location and often times it will appear as a straight line.