One I saw yesterday on a mustang made me think that the owner has recently been pulled over by the BiB
SRO 850N
It wasn't spaced as such when I last saw it.
Also saw LE66END which is a bit of fun.
Around here was L3GAL which must be worth a few quid and on a Ferrari, which I think may belong to a Pink Floyd, member is PAN1C - spotted in Hampstead a few years ago but doesn't seem to show up now.