Nasa is working on flying vehicles with the initial goal of transforming small plane travel. Small planes are generally costly, loud, require months of training and lots of money to operate, making flying to work impractical for most people.

• 小型飞机通常都很昂贵，噪音也大，驾驶这种飞机还需要数月的训练和不少资金，这一切都使得“飞去上班”成为大多数人不切实际的幻想。