Abstract: A modular air land vehicle comprising an air vehicle module and a roadworthy land vehicle module, which may interconnect by the air vehicle module landing directly on a stationary or moving land vehicle module as appropriate for the air vehicle lifting design. The air vehicle module has the capability/utility of separating from the land vehicle module and taking off in a flight mode; thereby enabling the air and land modules to be operated separately and independently without the need to take heavy roadworthy structure into flight. This invention provides the combined benefits of air vehicle travel and land vehicle travel allowing the land vehicle systems or structure to be tailored and optimized for land and road travel without unduly increasing the air vehicle weight or aerodynamic drag.