What are the legal constitutional methods that a LEO could use to search a motor vehicle under the below hypothetical? List and describe all the legal exceptions that the Trooper could use to conduct a warrantless search.

Hypothetical: Frank is driving to class at F.A.U. Frank is pulled over for speeding on the turnpike. The F.H.P. Trooper asks for Frank's driver's license. Frank gives the Trooper a suspended D.L. The Trooper arrests Frank for DWLS. The Trooper smells the odor of marijuana coming from Frank's passenger compartment.