Notice the use of the prepositions of place at, in and on in these standard expressions:
at in on
at home in a car on a bus
at work in a taxi on a train
at school in a helicopter on a plane
at university in a boat on a ship
at college in a lift (elevator) on a bicycle, on a motorbike
at the top in the newspaper on a horse, on an elephant
at the bottom in the sky on the radio, on television
at the side in a row on the left, on the right
at reception in Oxford Street on the way