There was incentive for delaying it as long as possible, for example you could evade tolls that were charged based on license plate readers. It looks like as o

There was incentive for delaying it as long as possible, for example you could evade tolls that were charged based on license plate readers. It looks like as of this year (in California at least) there is now a requirement to have a temporary plate that is in the same location as the permanent one, partly to prevent people doing the above: https://www.dmv.ca.gov/portal/dmv/detail/vr/templp https://www.dmv.ca.gov/portal/dmv/detail/vr/templp