Originally Posted by
GentleGiant
That will be because someone else did it in the past for that vehicle
Will only allow one person to register a car otherwise the system would not know who to charge.
Could be, but that's poor programming if so. If someone else registered and will pay my toll, that is fine with me

But most likely they used a short term account and, like me, specified start and end times to be the start and end times of my rental, right?
If a car can be registered only once, that makes the short term accounts of little value to renters.