The prototype electric Deliver E-Trike has independently-pivoting rear swing arms, which allow it to stand upright when parked on grades
When those of us who live in urban areas picture letter carriers – or posties, or mailmen/women – we usually think of them as people who deliver the mail by foot. The fact is, however, letter carriers in much of the world use small motorcycles to make their deliveries. If Australian inventor Simon Williams has his way, many of those motorcycles may soon be replaced by his electric three-wheeler. Not only is the Williams Deliver-E Trike quieter and cleaner than gas-powered bikes, but its two rear swing arms pivot independently, allowing the vehicle to lean into turns and stand upright when parked at the side of a sloping road.