SaM CLaRKE was struggling to sell electric scooters to commuters over the internet. Having travelled extensively in China, where the scooters are common, Clarke thought the British would enjoy the cheap and green form of transport too.  Back home, however, commuters proved hard to convince and, as the credit crunch hit, business was tough. Each container-load of scooters he imported seemed riskier and less financially rewarding, and he began to consider whether it might be better to use them for some kind of service, rather than trying to sell them.  Meanwhile, Matt Linnecar had spent two years working for Bank of New York Mellon but was tiring of the City and looking for green projects to invest in.  He thought electric vehicles were the future and, while researching on the internet, came across one of Clarke's scooters. He got in touch and the pair found they were the same age, 27, and lived near to each other.  They hit it off and in November 2009 launched Gnewt Cargo, a delivery service run entirely with electric vehicles. It is a green alternative for companies that want to deliver lots of small parcels in central London.  Most of the deliveries are made on electric rickshaws that can weave through the traffic jams. after starting small from a base on the City fringe, Gnewt is preparing to open three more depots across London.  Start-up funding came from two angel investors whom Linnecar met through a friend.  Gnewt handles about 1,000 parcels a day from its Tower Hill base. "We are trying to pinpoint clients who are consistentl