In this case what happened more than likely is that the driver didn't log in correctly to the truck 1 and he has been assigned all the time to truck 2. All the logs for truck 1 are likely under unassigned driver if no other driver logged into the Drive App and assigned himself to this vehicle. The logs can easily be reassigned to the right driver.
Can you please create a support ticket and provide more details like database name and driver in question? I don't want to make any assumptions and would like to analyze what happened before jumping into conclusions. This can easily be addressed, so please give me the ticket number once you have it and I'll take a look.