Could old jobs be made green jobs?

The other day I was in downtown Palo Alto and it struck me as odd that the meter people rode around in these little gas powered carts. They basically go around looking at chalk marks on the car tires that they had marked earlier. It was fairly low speed motoring around the downtown area. So I was thinking, would it make more sense to have the meter people ride bicycles as they zip around town. They could modify the bikes to mark the tires efficiently. It would save gas, be good for health or so Northern Californian.

We know that in some cities, the fastest way to move things is bicycle couriers? What else would bicycles be an advantage?