US plates have the state at the top (usually) or bottom, spelled out, and don't encode it, so the same plate number can be in more than 1 state. Usually, they're assigned alphabetically, like the AAA series first, then AAB, then AAC, and so on until ZZZ is reached. Then, some numbers count within each series, usually padded like 000-999 or 0000-9999. So, you can tell the rough age of a plate by the letters When they get past ZZZ, they'll rearrange the letters and numbers or add a digit or something. Michigan and Washington both do this, although some other states differ. I think many East Coast states just count from 1 without using letters at all, and having a low plate like "47" is considered a status symbol

Also, for some reason, pickup trucks are usually assigned a separate set of series with only 2 letters instead of 3. I have no clue why. SUVs and vans are usually given the same series as cars.

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TKB Super Mario Bros. • TKB Super Mario Bros., Volume II