Re-designing rickshaw

By now it is apparent that for some years at least, (perhaps decades) a vast majority of Dhakabashis and those in other cities, towns and villages in Bangladesh will have to keep on using the existing millions of rickshaws to go about their daily vocational pursuits. What is surprising however is that while just about everything around them has changed, rickshaw design is still the same that I first saw more than 7 decades ago. Since this is by no means a rocket science, I wonder, why this is so. Is it because those who make them, those that drive them and those who use them are all voiceless to be bullied by the 'law' and herded like sheep by the raucous horns of the ever-growing car-owner's fraternity?
Anyway to meet the ends of justice, here are a few suggestions to make rickshaws safer, more comfortable and easier on the pullers. 1) The centre of gravity must be lowered to make them more stable. This is easily done by reducing the 1 foot out-dated spring to about 4-6 inches. 2) The ratios of the two gears have to be adjusted accordingly to make it easier for the pullers. 3) What prevents the one-man-power 'engine' being helped by solar power and/or re-chargeable batteries? Why not give a few of the thousands of 'seized' rickshaws to the brighter lads in the mechanical-electrical department of BUET and let them hone their talent and come up with workable prototypes?
Finally how to rid ourselves of traffic congestion? I won't even mention a) Free parking on public roads or b) empty cars plying unchecked or c) total ban on licence-less cars and drivers or d) unrestricted import of cars or e) traffic lights, freeways, under and over passes etc, but 1. Allow occupied rickshaws one lane on all roads, automatically reducing short distance journeys by sane car owners. 2. By the same token, empty cars are to be banned on narrow lanes/by-lanes. 3. Reduce the millions of pot-holes on public roads to give our spinal discs some respite, 4.Of course, we will miss the daily comedy (actually tragedy) one sees in the narrow confines of Banani and Gulshan and hundreds of similar places where14-18 feet cars try to circumvent the 10-12 feet inner lanes and 5. if the powered rickshaws can whiz around at about 15-20 kmph, it would certainly bring the arrogant and autocratic CNGs down to earth!!.