Well, there's a DIY electric car which needs both axles to be re-designed. They didn't pass driving tests in the field. Design is complete but welding cannot start before weather turns nicer.

Also, my house needs a battery shed on wheels - wheels to keep away construction bureaucrats, shed because it's uncomfortable to sleep under the same roof with a very considerable amount of lithium cells. I'd like to keep some distance from them so that if something goes wrong, it's would be just the cells. :) The bottom platform with wheels is complete, walls and roof and everything such - nope, not a trace, not even a good drawing. :)