Buy, lease, or sell; restore; or convert a hydrofoil ferry, tour boat, or work boat (new or used) descriptions, advice, sources of information, joint venture. Don’t forget to add the ooogah horn when you build this homemade electric car for the kids next birthday. these are free plans for a antique auto half-scale replica. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for.