

That depends entirely on what you want to print/design.
If it’s organic forms (Think characters, decorative objects, etc) then something like Blender would suit your need.
if you want to go more technical (machines, precision parts) then you’d use one of the various CAD tools, e.g. FreeCAD, TinkerCad or Fusion360




Usually the electric cars with a larger motor are also more efficient, since the motor does not have to run near its peak all the time.