I know the HOV ownership is transferable so if I sell my HCHI, the buyer will want to transfer my HOV eligibility to him. What I'm thinking is buying the HCHII first and if the CA DMV can 'transfer' my HOV sticker (issuing another set) that would be great. Then, I'll sell my HCHI. This idea doesn't seem to fly somehow but that's the only thing I can think of now.