Paris, Cars, Bikes and art de vivre
more hi-quality public transportations + more green + less car lanes = happy people (well those that realize that car is not an absolute necessity).
On the other hand some need to drive in Paris for they daily job (transporters ...), I guess it's not funny for them to be stuck in traffic jams.
One additional thing Paris miss is giant parking lots outside Paris. Ideally they would be free - or the parking fee would allot you some public transportation free time.