Weaknesses and Strengths of public transportation in Paris

Having taken most forms of transportation, to a varying degree, I have compiled this list :
Bus
Greatest enemy(ies): Passengers, Stops, Traffic Jams, Strikes, Sundays, Baby Strollers.
Greatest advantage(s): Price, Speed outside of peak hours, Ability to multitask while taking it.
Car
Greatest enemy(ies): Traffic Jams, Price, Parking.
Greatest advantage(s): Speed, Trunk Space, Passanger Space, Access to places.
RER
Greatest enemy(ies): Strikes, Access to places, Off-peak hours, Crowds, Weekends and Nights.
Greatest advantage(s): Speed, Suburbia, Ability to multitask while taking it.
Metro
Greatest enemy(ies): Late night, Strikes, Crowds.
Greatest advantage(s): Access, Frequency, Speed.
Scooter
Greatest enemy(ies): Trunk space, Passsangers.
Greatest advantage(s): Traffic Jams, Parking, No need for a License under 50cc
Motorcycle
Greatest enemy(ies): Price, Trunk space, Passengers, Accidents.
Greatest advantage(s): Traffic Jams, Speed, Parking, Access.
Free Stealth Hover Tank:
Greatest enemy(ies): NONE it's an invisible tank that flies.
Greatest advantage(s): Everything