Two analogies that relate places/locations to the associated travel mode is given in the form "A : B. C : ?". "A : B" relates place A to travel mode B. Your task is to replace the question mark (?) with the appropriate travel mode for the given place C, following the "A : B" relation.

washington : train. restaurant : ?
taxi

theater : car. mars : ?
spaceship

mars : spaceship. store : ?

car