But the problem with this car was it was designed to only be driven in a very controlled environment, in a flat, closed-off parking lot -- even the lanes defined by red traffic cones.
もっとも この試作車は設計上 よく管理された環境でしか使えず 閉じた平坦な駐車場で走らせ 車線もロードコーンを使っていました