Business Green: It may be the latest electric sports cars and sedans that dominate the headlines, but over the next five years it is the humble delivery van that is likely to determine the success of the burgeoning electric vehicle market. That is the conclusion of new research from analyst firm Frost & Sullivan to be released later this week, which predicts that electric buses, vans and trucks will account for 70 per cent of the electric vehicle market in the EU and North America by …