Why that's easy.
Bump out that garage. That way you'll have room for BOTH the vintage Bianchi AND a new carbon fiber one and not have to lift either. Explain to your wife that you could never bear to part with your beloved steel Bianchi just because a younger and svelter model has come along. You wouldn't do that to her.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.