Mobility scooters and global warming what is this all about?

Everyone seems to getting one as a 70th birthday pressie (in some cases much much earlier) saw one the other day being driven erratically down the pavement by someone with a cig in one hand and mobile phone in the other. I'm sacred - what happens when the Hells Angels open up a mobility chapter near where I live. What about carbon footprints? just think of the power drain charging all these scooters overnight just so someone can go down the shops for a packet of Werther's Originals. Are people just getting to lazy to walk?