FIX: Return commuting trips were not properly recorded as such
CHANGE: Passengers will always return by car if their outbound journey is by car, as they cannot leave their car behind.
CHANGE: If passengers cannot return by public transport, they will return on foot if the return journey is within their tolerance range.
CHANGE: Passengers will not return by car if their outward trip was not by car, as they will not have their car with them.