Hybrid Vehicle HOV Access Act - Amends Federal highway law to authorize a State to permit a hybrid vehicle with fewer than two occupants to operate in high occupancy vehicle (HOV) lanes. Defines "hybrid vehicle" as a motor vehicle: (1) that draws propulsion energy from onboard sources of stored energy which are both an internal combustion or heat engine using combustible fuel and a rechargeable energy storage system; and (2) which (in the case of a passenger automobile or light truck) for 2002 and later models meets certain clean air requirements.