Where I lived growing up we had a double garage at home that was colossal. You could, technically, fit three cars in it across its width and there was storage and work benches at the end.
Instead of the third car, my Dad had a large lathe in the middle for wood turning, etc.
Wish I had that now...!
Edit: it had its own loft space too, which was used for storage, but could have easily accommodated a home office.
It's annoying me thinking about the fact I don't live there anymore now...!