Step 4:
Make the vehicles smaller.
Fully enclosed, air-conditioned, two seat
"Mini Robot Kiddy Train"
Footnotes:
Consider size and raw material consumption.
If we make our Kiddy Trains a lot smaller than a Light Rail car and design them to only have to carry the weight of two people, they will consume much less raw materials and their cost will be significantly lower. It is the same as comparing the costs of a huge $200,000 multi-passenger bus to a $7,000 small import car that carries 4 people. However, since the Mini Robot Kiddy Train rides on smooth tracks, it doesn't need: steerable front wheels; a steering wheel system; or a sophisticated suspension system to absorb the pounding of the occasional pot hole. If the track is electrified, the Mini Robot Kiddy train also doesn't need to carry the extra weight of a power plant; fuel; and a fuel tank. A complicated mechanical or fluid drive transmission can also be eliminated when an electric motor is used. Lastly - no internal combustion means no fumes and pollution from the vehicles.These small vehicles would be very inexpensive, especially if you set up a mass production factory and produce 1,000's of them instead of a dozen total.