Yeah, it's like an Airplane option [1] except without a price which is kinda the point. 1: https://en.m.wikipedia.org/wiki/Option_(aircraft_purchasing) https:/

Yeah, it's like an Airplane option [1] except without a price which is kinda the point. 1: https://en.m.wikipedia.org/wiki/Option_(aircraft_purchasing) https://en.m.wikipedia.org/wiki/Option_(aircraft_purchasing)