Define your problem, and then make your decision.

For this particular example, you can apply this sequence of logic (with thanks to wccrawford):

  if(Baggage)  use a car.
  else if(In a hurry?)  use a car.
  else if(Need to be rested?)  use a car.
  else if(Need to go 150 miles^ or more?) use a car.
  else use a bike.

^ You'll need to set this value yourself ;)