Bike OR Scooter

I am Planning to Buy A two wheeler but confused about which type Scooter or Bike.
My requirement is I have to travel around 40 KM/day for my office, Part of the road is High way(Mumbai Suburb)& part is city road. I am Over weight. I have to learn two wheelar driving, I know bycycling.
I need good mileage, Low Maintainance, Suitable to my Over weight Physic & self start.
I have made a Choise of New Active (DLX) model or A bike HH Passion Pro.
Please help to choose the correct or any other model of Scooter or Bike.

Thanks

Arun P